Its the classic negative feedback loop.

All you hear about is bad people, doing bad things, because normal, sane, respectful, law abiding people don’t make news because who is going to make headlines like “NORMAL PERSON RESPECTS OPINION AND DOESNT HAVE A TANTRUM OVER BEING DISAGREED WITH”

So people with low critical thinking skills and an aversion to regular thinking just leap to “ALL X ARE BAD, NO EXCEPTIONS”