When among all the rights you do, a tiny bad thing done by you doesn't matters. But it does, not to you of course, for you think it's only fair that you attempt a tiny bad thing in your otherwise pious atempts but it's wrong and unfair to the one unfortunate person that is losing something. It's unjust to them. And it break them inside that you'd do the right with everyone, but wrong with them.
The thing about us is that we categorize. We favor. And we do it without taking in account the consequences. Without going in details, favoring the big picture. But that very picture is incomplete without the details. Stare a little longer and you'll see the missing patterns, the place where you missed it. The wonderful picture suddenly looks very very ugly. And that detail that you missed is often the reason some people break down deep inside. You become the reason, because you don't value. You value yourself. We can stop entertaining people for a material thing but we think a thousand times before we acknowledge a person over material thing.
We need to look at the bigger picture, not just a sweeping glance, but really look at it, taking in details before you act or add.