It's hard. It sucks, right? You don't want to become "that angry person." "That angry person to whom everything is about race (gender)(religion)." You don't want to drive people away from you, you don't want to seem like an angry person, you don't want to be an angry person.
But the alternative is that you allow things which should not be allowed to stand, stand.
I understand your exhaustion. I'm sorry. It sucks. But it's either be exhausted, and speak up (and even then, over time, you will learn you have to pick and choose) - or become an accomplice via witness.