During a recent prayer session in support of Black Lives Matter, the pastor of St. Xavier Catholic Church in New York City instructed white congregants that they must renounce their white privilege to help "transform the church culture." Using the noble cause of racial equality as a fig leaf, Black Lives Matter is in fact a violent political organization whose Marxist ideology is anti-Christian — and anti-American — in the most profound meaning of those terms. In many churches across America, cultural Marxists in the pulpit are quietly supplanting traditional Christian values with those of the hammer and sickle. "Cultural...