Welcome to humanity, I guess. We're full of contractions and no matter your opinion, someone will hate you for it.

I wouldn't worry too much about it and just focus on your own beliefs first. You'll never start a conversation with someone or change their opinion if you only tell them how they are wrong. And I'm not just trying to single you out. In fact, the people you are complaining about do the same thing. As soon as someone's beliefs are put into questions they will do anything to defend it no matter how irrational it is and will even contradict themselves just to prove that one belief.

As an example, unless you're a straight up piece of shit or a bigot I can't find a reason to actually support innocent people getting killed or hurt. But if someone supported a person/people before shit got worse, they'll try and justify it and believe there must be a reason. It's kinda like a toxic relationship. Someone will stay in a relationship with someone for years with abuse, but because they love them they'll try and justify it and believe they must have deserved it. It's really easy to see shit from the outside, but from the inside you want to believe there is a reason and that you are right. No matter what. Because if you're wrong, what do you even stand for?