Modern Orthodoxy in the context of "Jewish religious movements"

Jewish religious movements, sometimes called "denominations", include diverse groups within Judaism which have developed among Jews from ancient times. Samaritans are also considered ethnic Jews by the Chief Rabbinate of Israel, although they are frequently classified by experts as a sister Hebrew people, who practice a separate branch of Israelite religion. Today in the West, the most prominent divisions are between traditionalist Orthodox movements (including Haredi ultratraditionalist and Modern Orthodox branches) and modernist movements such as Reform Judaism originating in late 18th century Europe, Conservative (Masorti) originating in 19th century Europe, and other smaller ones, including the Reconstructionist and Renewal movements which emerged later in the 20th century in the United States.

In Israel, variation is moderately similar, differing from the West in having roots in the Old Yishuv and pre-to-early-state Yemenite infusion, among other influences. For statistical and practical purposes, the distinctions there are based upon a person's attitude to religion. Most Jewish Israelis classify themselves as "secular" (hiloni), "traditional" (masortim), "religious" (dati) or ultra-religious (haredi).