Generally, if I'm undecided on a topic, and I see people doing something fucking idiotic in support of it, that doesn't make me think, "hmm, these people seem like they have a good point."
If this is the only thing you know about climate change, you were never gonna be an asset in the first place, bub, and if you’re judging whether anthropogenic climate change is real based on the actions of activists, you’re just a fuckin idiot.
You really don’t get that not everyone is worth working with, do you?
If you would not work towards saving the human race because books got painted, you are of no value to that movement.
Your allegiance is worthless, so withholding it is nothing.