Scale and context are incredibly important, and humans are spectacularly bad at estimating them.
You hear of some particular evil. It’s purely bad in all forms, and so you want to rail against it. Should you?
Maybe! But maybe this thing, no matter how purely bad it is, represents such a minor ill in the grand scheme of things that your response is disproportionate.
You only have so much anger and effort to go around. Even if something is deserving of it in a vacuum, we don’t live in a vacuum. We live in a world of connected, interdependent features and some of them might be “less bad” but affect far greater swaths of that world. Keep that in mind when you want to be mad.