Of course I know. If I say good morning to a man it's because I'm flirting and want him to assault me.

There's a reason we stopped smiling and engaging with random men, after all. It was used us against us if we were assaulted. "Proof" that we were asking for it.

Also "proof" that we didn't deserve our promotion or raise. "Proof" we did something outside the job to get it.

In your case, you're experiencing bigotry against the disabled. That incident had nothing to do with misread intentions. It's not the same.