Because it instills in people an identity, without which it is impossible to see let alone advocate for one's own interests. For example, if the Japanese had no identity, you'd just be Asian people. There would be no Japan.
>>212900267 (OP) it's mostly browns and blacks and yellows spamming race shit all the time, probably some jews too they do it because 90% of them are completely undesirable to women of all races