It's tough living in a world without elves and lizardmen.
*cue laugh track*
Context is irrespective of race.
Maybe you should focus on actual context.
That's not historical context, that's ACTUAL context. Discussing a slur and its impact is the same irrespective of race. Deciding to use the slur against an individual or group is the same irrespective of race. The claim that a racial slur isn't racist just because the person is of that race is just so profoundly fucking ignorant that one hardly knows where to begin criticizing the stupidity of that claim. The underlying assumption is that somebody can't be racist against their own race, which is just flat-out wrong and -- since you love bringing up "historical contexts" -- there are PLENTY of historical contexts backing up the idea of people being racist against their own race. Seriously, fucking educate yourself. Even today there are widespread issues where people are racist against their race, including discrimination among blacks based whose skin is lighter or darker.
Yes, I know about those things too, you don't have to call me 'so profoundly fucking ignorant'. This conversation isn't really worth having if you're going to be on this level of insultingly rude. I am aware of people being racist against their own race. Just please tone it down if you actually want to talk about this, please.