I wouldn't want to see slogans like this on an airplane of all places. I agree with the slogan. There are plenty of other times/places to say it. Unfortunately freedom is already out the window the moment you go through TSA security, so if I'm getting my crotch patted down to fly, they can be quiet for a few hours too.

Cognitive dissonance can explain a lot. If you don’t think the current regime is genocidal (whatever that even means) then you might get very concerned that anybody who says it is genocidal is a dangerous lunatic or terrorist sympathizer. Even saying something obviously truthful like “there are good people on both sides” becomes a threatening provocation. Hate is a system.