"I don't want the n-word suppressed; want it openly allowed so people who utter it can be removed from employment under guard, never to work again. I want them to identify themselves so they can be shunned and ostracized, their children rehomed."

You say you don't want the n-word suppressed, but I can't think of a more effective means of suppressing a word than taking away the children of anyone whoever says it 😅. Social censure is a great way of changing behaviour, but it isn't so good at changing attitudes. To use a topical example, do you think vaccine mandates and shaming are making anti-vaxxers more or less amenable to the vaccine? Similarly, if we rounded up the children of everybody who said the n-word, do you think we'd increase or decrease racist sentiments?

As far as I can see, the attitudes behind racism or sexism or all flavours of bigotry are exactly the same:

"You are different to me in some way. That difference implies a bunch of qualities that can be generalised to everybody in the same arbitrary group as you. Those qualities make you inferior and/or undesirable."

There are huge differences in *how* this attitude manifests (perhaps this is what you mean by "qualitative differences"). An anti-semite might express themselves differently to a racist or a sexist or a homophobe. But the cognitive flaw behind it, at least as far as I can see, is always the same. Very happy for you to point out what I'm missing.

You also seem to have misunderstood my last point. I'm not saying that racism will die with a word. I'm saying that racism will die when attitudes and thinking changes. When we look at racists as the simple-minded crackpots that they are. When the "insults" they try to hurl bounce off their intended targets. When they feel ashamed to express their racist views because the the reaction they get fills them with doubt.

The colour of somebody's skin is an almost unbelievably stupid reason to hate them or abuse them. Punishing people for their stupidity, especially in the ways you're suggesting here, doesn't make them less stupid. It allows them to feel as if they're martyrs to a cause. Get enough of them feeling that way and you have a whole different problem.

Black people should be protected from racism that affects their access to opportunity. Hiring practices, medical care, policing, and so on, anything that impacts black people's access to these and other aspects of life should be dealt with seriously and decisively. But name-calling? I hope for a day when the very concept of a racial "slur" sounds just as archaic and ridiculous as a tallness "slur" or a beauty "slur". As far as I can see, there's no way to separate the idea of a racial slur, especially one that only exists for black people, from the idea that there's something wrong with being black.