One example: "Once the tactic of infiltration of religious organizations was set by the Kremlin... the communists discovered that the destruction of religion could proceed much faster through the infiltration of the Church by communists operating within the Church itself. The communist leadership in the United States realized that the infiltration tactic in this country would have to adapt itself to American conditions and the religious makeup peculiar to this country. In the earliest stages it was determined that with only small forces available to them, it would be necessary to concentrate communist agents in the seminaries. The practical conclusion drawn by the Red leaders was that these institutions would make it possible for a small communist minority to influence the ideology of future clergymen in the paths conducive to communist purposes.... The policy of infiltrating seminaries was successful beyond even our communist expectations." - Manning Johnson, 1953
Manning Johnson was a member of the US Communist Party in the 30s and knew of their plans to use religion, all religions, to further their goals. His was not the only voice which sounded the alarm, btw.
A little footnote to this story: Joseph Stalin became an atheist and Marxist revolutionary while a student at Tiflis Theological Seminary, an arm of the Russian Orthodox Church.
Pure evil. Misery for the entire world. Nobody is safe, and, of course, fewer people will actually come to Jesus under the spell of Marxist “liberation theology” gobbledygook.