I'm sorry that happened to you.
However, your anecdotal experience is just that. I have been subject to exponentially more racist abuse from black individuals than from individuals of any other race. Does that indicate to you that we should be "pushing back" against black racists? Obviously not, because my personal experience is not enough to draw any conclusions about society as a whole.
In fact, you're condescending me right now. You're implying that your personal judgment supercedes my rational argument. I provide sources and construct an argument, and you respond "this is news to me" (condescending and dismissing my argument) and proceed to explain that what I'm saying can't possibly be true, because it contradicts your personal viewpoint.
I agree. People tend to ascribe inherent traits to other groups, when in fact observed behaviors can usually be traced not to inherent dispositions, but to specific environmental conditions that incentivize said behaviors.
For instance, a white man in our current social environment who exhibits a confident, assertive attitude is well situated to succeed. White men are expected to be competent and often rewarded for appearing competent, so they sometimes attempt to exaggerate their competence in order to meet the perceived expectations.