Oh, he did. He preached that Jews are to be abolished, and he practiced by not only creating the most antisemitic movement, but also by calling Ferdinand Lassalle a Jewish-Nigger.

Marx very much practiced exactly what he preached. The fact that Anti-Cosmopolitan Campaign and China exposing Long-Nose Tribe happened is no accident. Marxism is fundamentally antisemitism. It cannot be separated from antisemitism because Marxism sprang from antisemitism, and it will return to antisemitism.