Marxist–Leninist atheism (Russian: Марксистско-ленинский атеизм) is a part of the wider Marxist–Leninist philosophy (the type of Marxist philosophy found in the Soviet Union), which rejects religion and clergymen as well as advocates a materialist understanding of nature. Marxism–Leninism holds that religion is the opium of the people, in the sense of promoting passive acceptance of suffering on Earth in the hope of eternal reward. Therefore, Marxism–Leninism advocates the abolition of religion and the acceptance of atheism. Marxist–Leninist atheism has its roots in the philosophy of Ludwig Feuerbach, G.W.F. Hegel, Karl Marx, and Vladimir Lenin.Some non-Soviet Marxists opposed this antireligious stance, and in certain forms of Marxist thinking, such as the liberation theology movements in Latin America among others, Marxist–Leninist atheism was rejected entirely.