It's really not. The standard liberal view is that all races deserve equal treatment, and that racism can be committed by every race. Please get out of your political bubble.
I know several American liberals. Not one has the views you describe.
No. I'll reiterate, leftists believe in an individual's right to choose their own belief. That means that any person can believe whatever they want, as long as they don't break the law. We also believe in self-determination, which is the right to dictate what happens in your own life, as long as you don't infringe on other's rights.
There's nothing "insane" in that. It doesn't apply to any one group. It gives every individual a fair shot at life, provided they stick within the laws of the land.
Come onto a private community owned by me, and watch me. Notice that 'Report' button beneath every post? That notifies the owner, so he can remove posts that violate this site's User Agreement http://www.createdebate.com/about/
Y'know, the user agreement you accepted when you created an account on this website.
Antifa is a totally decentralised entity. It's nothing more than a flag that people rally under. It's members range from communists, to anarchists, to mainstream liberals. There is no central group, publication, or leader that can claim to represent the true antifa.
The only feature binding antifa members is being under an anti-fascist flag. Antifa is absolutely not fascist, because that is 100% impossible.