> Its just who you are and who you want to be.
Exactly, it's who YOU want to be. But that doesn't mean you have a right to make society or a whole country or region the same way. You can be who you want, but then why can't your neighbour next door have the right to be different from you?
These things you talk about: race, ethnicity, heritage and identity are all very *personal* things to the individual, and they are multi-faceted. Let's say you have Genghis Khan in your lineage - does that mean you have a Mongol identity and consider yourself of the Asian tribe? No, you have thousands of lineages and heritages to choose from, so these ideas you have of tribalism are just artificial. Theya re as real or as unreal as you wish. But they're certainly no basis to run a society on and exclude those who don't share your idea of identity. You could have a twin brother who has his own ideas, maybe seeing himself from a different lineage, maybe fancying himself as a descendant of the Roman Empire, or even the short-lived nazi Empire, and it's just as valid as your personal 'heritage' and 'identity'.