That's a claim @tonygreene113, a desperately misinformed one at that. I see no argument, just this nebulous claim. Do you have any arguments to substantiate the claim?

If the blm isn't a left wing group then why are they fundraising for democrat candidates?

Still no argument in sight, and I never refuted your claim that BLM is a left wing group. However, you called them something else entirely: "a marxist army of the far-left." Probably to justify the extremist right wing reaction by alt-right neo-fascists. If not, try convincing me by making a real case for your claim.

On their website they claim to be hardcore marxists bent on desecrating the capitalist economy of the United States.