I’ll bite. I would have to ask though, doesn’t culture influence ideology?
I had to go back to base truths in order to answer your question.
Leftist ideology and black culture are both centered around rejection of the Western, Judeo-Christian value system and worldview, for different reasons though. Black culture is a rejection of anything seen as “white”, which Western culture is.
Leftist ideology is the expression of the religion of Humanism, or rebellion to God.