But in all seriousness, if seeing it on github is damaging to the mental health of descendants of slavery in america, why do we allow the word to exist at all a

But in all seriousness, if seeing it on github is damaging to the mental health of descendants of slavery in america, why do we allow the word to exist at all and where is it acceptable to use? Should words like this be put in something akin to a biohazard lab?