Open carry in the United States in the context of Sling (firearms)

Defensive gun use (DGU) is the use or presentation of a firearm for self-defense, defense of others or, in some cases, protecting property. The frequency of incidents involving DGU and their effectiveness in providing safety and reducing crime are controversial issues in gun politics and criminology, chiefly in the United States. Different authors and studies employ different criteria for what constitutes a defensive gun use which leads to controversy in comparing statistical results. Perceptions of defensive gun use are recurring themes in discussions over gun rights, gun control, armed police, open and concealed carry of firearms.

The Black Panther Party (originally the Black Panther Party for Self-Defense) was a far-left, Marxist–Leninist and black power political organization founded by college students Bobby Seale and Huey P. Newton in October 1966 in Oakland, California. The party was active in the United States between 1966 and 1982, with chapters in many major American cities, including San Francisco, New York City, Chicago, Los Angeles, Seattle, and Philadelphia. They were also active in many prisons and had international chapters in the United Kingdom and Algeria. Upon its inception, the party's core practice was its open carry patrols ("copwatching") designed to challenge the excessive force and misconduct of the Oakland Police Department. From 1969 onward, the party created social programs, including the Free Breakfast for Children Programs, education programs, and community health clinics. The Black Panther Party advocated for class struggle, claiming to represent the proletarian vanguard.

In 1969, J. Edgar Hoover, the director of the Federal Bureau of Investigation (FBI), described the party as "the greatest threat to the internal security of the country." The FBI sabotaged the party with an illegal and covert counterintelligence program (COINTELPRO) of surveillance, infiltration, perjury, and police harassment, all designed to undermine and criminalize the party. The FBI was involved in the 1969 assassinations of Fred Hampton and Mark Clark, who were killed in a raid by the Chicago Police Department. Black Panther Party members were involved in many fatal firefights with police. Huey Newton allegedly killed officer John Frey in 1967, and Eldridge Cleaver (Minister of Information) led an ambush in 1968 of Oakland police officers, in which two officers were wounded and Panther treasurer Bobby Hutton was killed. The party suffered many internal conflicts, resulting in the murder of Alex Rackley.

Concealed carry, or carrying a concealed weapon (CCW), is the practice of carrying a weapon (usually a sidearm such as a handgun), either in proximity to or on one's person in public places in a manner that hides or conceals the weapon's presence from surrounding observers. In the United States, the opposite of concealed carry is called open carry.

While most law enforcement officers carry their handguns in a visible holster, some officers such as plainclothes detectives or undercover agents carry weapons in concealed holsters. In some countries and jurisdictions, civilians are legally required to obtain a concealed carry permit in order to possess and carry a firearm. In others, a CCW permit is only required if the firearm is not visible to the eye, such as carrying the weapon in one's purse, bag, trunk, etc.