He uses slurs

True, not a fan of this.

does harassment campaigns against leftist people of color

I haven't seen an example of this. Care to share one? Not saying it doesn't happen - but e.g. the "Professor Flowers" stuff is most definitely not an example of this.

is overall a giant chump that is far more of a reactionary than any leftist

I don't really see that, some people are far more reactionary.