Saying BLM is Marxist because it's based on philosophy that was based on philosophy created by people, some of which were Marxists, is crazy. That would be like saying everyone who believes in the Cultural Marxist conspiracy theory is a Neo-Nazi.
I am saying it is Marxist in part because it was created at the Universities and indoctrinated there by Mind Molders who often claimed to be Marxists, and a lot of the rest were crap careerists who rarely stepped up for either truth or being decent people.