I Have a Question

I’m not mad or ranting about something but I wonder what gives people the right to judge someone else based on who they love or who/what they are? Do they ever think that they have done many things to be judged by as well, yet they think they are higher and better? I’m just curious because nobody is perfect and if someone thinks that they are than they apparently have no common sense or wish to learn the facts and not all the lies.