The internet is full of people projecting their sense of right and wrong onto others. Each of them so convinced that they are right and the others are wrong. But they can't all be right!
We cling so desperately to the need to be right. To know what right is. To feel that we are doing the right thing. We do this out of a need to feel in control, because feeling out of control is terrifying.
But we are never in control. Life is such an unimaginably complex interweaving of millions of factors, most of which we know are out of our control. But even the ones we think are in our control aren't.
Even our own thoughts aren't under our control. If they were we could decide not to be unhappy, not to be angry. But we can't. Think about it.