Damnatio memoriae in the context of "Severan Tondo"

Iconoclasm (from Ancient Greek εἰκών (eikṓn) 'figure, icon' and κλάω (kláō) 'to break') is the belief in the importance of the destruction of icons and other images or monuments, often for religious or political reasons. Those who engage in or support iconoclasm are called iconoclasts, a term that has come to be applied figuratively and more broadly to anyone who challenges "cherished beliefs or venerated institutions on the grounds that they are erroneous or pernicious".

Conversely, one who reveres or venerates religious images is called (by iconoclasts) an iconolater; in a Byzantine context, such a person is called an iconodule or iconophile. Iconoclasm does not generally encompass the destruction of the images of a specific ruler after their death or overthrow, a practice better known as damnatio memoriae.

Constantine II (Latin: Flavius Claudius Constantinus; 316–340) was Roman emperor from 337 to 340. The son of the emperor Constantine I, he was proclaimed caesar by his father shortly after his birth. He was associated with military victories over the Sarmatians, Alamanni and Goths during his career, for which he was granted a number of victory titles. He held the consulship four times – in 320, 321, 324, and 329.

Constantine I had arranged for his sons to share power with their cousins Dalmatius and Hannibalianus, but this was not accepted by Constantine II and his brothers. As a result, Constantine II's brother Constantius II ordered the killings of numerous male relatives following Constantine I's death, including Dalmatius and Hannibalianus, thus eliminating any possible opponents to the succession of Constantine I's sons. Constantine II then ascended to the throne alongside his two younger brothers, ruling Gaul, Hispania, and Britain. However, his belief in his rights of primogeniture and attempts to exert them over his youngest brother Constans caused conflict, which ended with his death in a failed invasion of Italy in 340. Constans subsequently took control of Constantine's territories, with the latter being subjected to damnatio memoriae.

Akhenaten (pronounced /ˌækəˈnɑːtən/ listen), also spelled Akhenaton or Echnaton (Ancient Egyptian: ꜣḫ-n-jtn ʾŪḫə-nə-yātəy, pronounced [ˈʔuːχəʔ nə ˈjaːtəj] , meaning 'Effective for the Aten'), was an ancient Egyptian pharaoh reigning c. 1353–1336 or 1351–1334 BC, the tenth ruler of the Eighteenth Dynasty. Originally named Amenhotep IV (Ancient Egyptian: jmn-ḥtp, meaning "Amun is satisfied", Hellenized as Amenophis IV), in the fifth year of his reign he adopted the name "Akhenaten".

As a pharaoh, Akhenaten is noted for abandoning traditional ancient Egyptian religion of polytheism and introducing Atenism, or worship centered around Aten. The views of Egyptologists differ as to whether the religious policy was absolutely monotheistic, or whether it was monolatristic, syncretistic, or henotheistic. This culture shift away from traditional religion was reversed after his death. Akhenaten's monuments were dismantled and hidden, his statues were destroyed, and his name excluded from lists of rulers compiled by later pharaohs. Traditional religious practice was gradually restored, notably under his close successor Tutankhamun, who changed his name from Tutankhaten early in his reign. When, some dozen years later, rulers without clear rights of succession from the Eighteenth Dynasty founded a new dynasty, they discredited Akhenaten and his immediate successors and referred to Akhenaten as "the enemy" or "that criminal" in archival records.

Atenism, also known as the Aten religion, the Amarna religion, and the Amarna heresy, was a religion in ancient Egypt. It was founded by Akhenaten, a pharaoh who ruled the New Kingdom under the Eighteenth Dynasty. The religion is described as monotheistic or monolatristic, although some Egyptologists argue that it was actually henotheistic. Atenism was centered on the cult of Aten, a god depicted as the disc of the Sun. Aten was originally an aspect of Ra, Egypt's traditional solar deity, though he was later asserted by Akhenaten as being the supreme of all deities.

In the 14th century BC, Atenism was Egypt's state religion for around 20 years, and Akhenaten met the worship of other gods with persecution; he closed many traditional temples, instead commissioning the construction of Atenist temples, and also suppressed religious traditionalists. However, subsequent pharaohs toppled the movement in the aftermath of Akhenaten's death, thereby restoring Egyptian civilization's traditional polytheistic religion. Large-scale efforts were then undertaken to remove from Egypt and Egyptian records any presence or mention of Akhenaten, Atenist temples, and assertions of a uniquely supreme god.

Herostratus, or Eratostratus, was an arsonist who destroyed the Temple of Artemis in an attempt to achieve infamy. Considered an early case of terrorism, his crime prefigured modern terrorist acts, including the assassination of Empress Elisabeth of Austria and the September 11 attacks. His name has become an eponym for someone who commits a criminal act solely to become famous, and the Herostratus syndrome afflicts "people who perpetrate odious attacks for the sake of infamy."

An obscure character, Herostratus burned down the Temple of Artemis at Ephesus, one of the Seven Wonders of the Ancient World, in 356 BCE. He was swiftly arrested and tortured to death, during which he confessed his intentions: to gain everlasting fame. The arson prompted the passing of a damnatio memoriae law barring anyone from mentioning his name, although many ancient writers, including one contemporary of the arson, documented him. While Herostratus is thought to have been spurred on by resentment at what he considered societal injustice, his exact motives are not known with any certainty.

Guibert or Wibert of Ravenna (c. 1029 – 8 September 1100) was an Italian prelate, archbishop of Ravenna, who was elected pope in 1080 in opposition to Pope Gregory VII and took the name Clement III. Gregory was the leader of the movement in the church which opposed the traditional claim of European monarchs to control ecclesiastical appointments, and this was opposed by supporters of monarchical rights led by the Holy Roman Emperor. This led to the conflict known as the Investiture Controversy. Gregory was felt by many to have gone too far when he excommunicated the Holy Roman Emperor Henry IV and supported a rival claimant as emperor, and in 1080 the pro-imperial Synod of Brixen pronounced that Gregory was deposed and replaced as pope by Guibert.

Consecrated as Pope Clement III in Rome in March 1084, he commanded a significant following in Rome and elsewhere, especially during the first half of his pontificate, and reigned in opposition to four successive popes in the anti-imperial line: Gregory VII, Victor III, Urban II, and Paschal II. After his death and burial at Civita Castellana in 1100 he was celebrated locally as a miracle-working saint, but Paschal II and the anti-imperial party soon subjected him to damnatio memoriae, which included the exhuming and dumping of his remains in the Tiber. He is considered an anti-pope by the Roman Catholic Church.

Diadumenian (/daɪˌædʊˈmiːniən/ dy-AD-uu-MEE-nee-ən; Latin: Marcus Opellius Antoninus Diadumenianus; 14 September 208 – June 218) was the son of the Roman emperor Macrinus and served as his co-ruler for a brief time in 218. His mother, Macrinus' wife, is called Nonia Celsa in the unreliable Historia Augusta, though this name may have been fictional. Diadumenian became caesar in May 217, shortly after his father's accession to the imperial throne. Elagabalus, a relative of the recently deceased Caracalla, revolted in May of the following year, and Diadumenian was elevated to co-emperor. After Macrinus was defeated in the Battle of Antioch on 8 June 218, Diadumenian was sent to the court of Artabanus IV of Parthia to ensure his safety; however, he was captured and executed along the way. After his death and that of his father, the Senate declared both of them enemies of Rome and had their names struck from records and their images destroyed — a process known in modern scholarship as damnatio memoriae.

Ay was the penultimate pharaoh of ancient Egypt's 18th Dynasty. He held the throne of Egypt for a brief four-year period in the late 14th century BC. Prior to his rule, he was a close advisor to two, and perhaps three, other pharaohs of the dynasty. It is speculated that he was the power behind the throne during child ruler Tutankhamun's reign, although there is no evidence for this aside from Tutankhamun's youthfulness. His prenomen Kheperkheperure means "Everlasting are the Manifestations of Ra", while his nomen Ay it-netjer reads as "Ay, Father of the God". Records and monuments that can be clearly attributed to Ay are rare, both because his reign was short and because his successor, Horemheb, instigated a campaign of damnatio memoriae against him and the other pharaohs associated with the unpopular Amarna Period.