How could I be expected to know the intent of your question when so little context is provided? If you ask such a general question, you can only expect a vague answer based on whatever I guessed was what you wanted. In order to not guess and more accurately answer what you want I have to ask for more detail on what you're asking. Otherwise I just have to assume you didn't actually want an answer.
I think it's because so much of our work and play these days involves concentrating upon ideas and stories and abstractions and such. We're all focused in our head.
Which means that our attention is turned away from everything else. IE the whole world.
If I'm taking this seriously, OP seems to be getting at the idea that people always insinuate "the other" is responsible for horrors, but that people in the same group are innocent? I don't think everyone does that though
As an over thinker - I probably created too much of a soap box for my inner accuser.
As someone who's facetious, I've probably offended plenty of those around me.
As a cyclist, I am that kind from time to time.
As a chocolate eater, I absolutely support slavery and I'm not proud about it.
As a meat-eater and wanna be veggo - I'm ashamed of how we treat and farm animals.
But as a human, I'm fucking always confused, forgetful and utterly imperfect, not deserving of any redemption whatsoever. If I was more charismatic, I'd probably start a suicide cult
edit I like the question, but maybe if you framed it so it encouraged a little more curiosity, you'd probably get more traction?