If you're actually an ally, no matter the group you're allying with, they see you.
They might not trust you. They have their reasons.
Taking it personally is the quickest way to prove them right.
And they are right not to trust you.
If you don't have skin in the game, and you insist on sticking your "I'm a good guy" nonsense in their faces, you are not a good person; you're egotistical and toxic.
Maybe you don't realize it, but it's really fucking obvious to everyone else.
BE. Don't say.