So there's basically three views on social welfare. The far right doesn't want it to exist at all, or if it must exist it should be funneled towards the already powerful, because nobody deserves it. The left says that we need to distribute social welfare in order to equalize society, because everyone deserves a good life. The liberals, in between the two, view welfare as a means to make up for societal failures or outright wrongs. It's not about the fact that these people are needy, it's about the fact that they're needy and it's our fault.

Race/caste/etc based welfare distribution comes from that last model.