The left tries to blame their antics on capitalism because their Marxist cause is aided by people rejecting capitalism. Scratch the surface of any anti-capitalist and you will find a brainwashed (likely by an esteemed institute of higher education) aspiring communist. And they’re happy to start telling you why Marxism isn’t bad, it’s just never been implemented properly.
It’s astonishing the anti-historical-fact propaganda people will absorb, when presented by a college professor and regurgitated for an A.