Swinging the opposite direction into 'white pride' bullshit is no more acceptable than the white guilt pushing the Left does.
The way i see it, pushing "white identity" as an open identity based power grab in clear bad faith is the only absolutely sure way to demonstrate to the other open identity based power grabs that perhaps, maybye, possibly open identity based power grabs are not the way they want their society organized.
If not that, how? If they can do it, yet never end up on the business end of such power grab, why would they ever stop playing these games, where if they win, they get more power, and if they don't, the other side has to magnanimously let them off with a warning so they can just try again a few years later?
This way or another, if you have better ideas, the social, cultural and political factions involved in this have to be made to regret such actions, or else they will *never* stop trying in increasingly more reckless, creative and stubborn ways, after all, they "have nothing to lose but their chains", as they like to chant and presumably, believe.
You need to convince them that in fact they are wrong in that; convince them that on the contrary, they have a lot of things to lose, they really wouldn't like to lose these things, and they will lose all these things if they don't start behaving themselves.