No joke here, just existentialism. One day you'll be dead, just like I will. This world, well it's a pretty tough and shitty place. If it's not your mission to make it better for everyone, I think you're missing the point. Human beings and their opinions, regardless of their viewpoints, politically, religiously, culturally - indeed, regarding anything to do with humanity, are entirely different from yours - yet they all die in the end - both people and ideas.

Uniqueness is that combination of genetics and life experience that we all have, but our experiences are often identical in reaction if not spatiotemporally. Essentially, we're all the damn same so any grudges you have are pointless, indeed they merely perpetuate violence against your fellow man.

Peace, love and forgiveness! :)