The people campaigning against the use of those words are usually from the category affected, plus a few thought leaders outside the category who say "maybe we shouldn't be so nasty towards the outsiders". It's the ones outside the category who everyone attacks as "politically correct", because of the unthinkableness of advocating for something that doesn't personally benefit them. The ones inside the denigrated category are usually invisible.

And that's why you do see people campaigning against hate speech outside of the West and Europe - but much more quietly and less visibly, partly because they're not amplified and partly because (as you've noticed) it's genuinely dangerous for them to do so.

There's a Pride in Uganda. It's illegal. You won't find people telling you not to use "f-g" there, because they don't have the power to say so safely.