Saw this thread, and it really hit a chord with me, as these similar fears tend to constantly weigh on me (for various reasons- being trans, ethnic Chinese, commie, etc).
I think we all (leftists, but also just most minorities) know, shit is bad and will get worse, it's just a question of how bad it will get. People mention it offhand without usually going further into the details, and similarly in other spaces - non-leftist ones as well, for instance Asian diasporic and LGBT spaces in my experience, these fears come up, but ultimately we keep the bulk of our concerns to ourselves. What are our expectations here, for the west? Not just for the US, but the Anglosphere and Europe?
That's my concern, too: I've personally met Hispanic people that were MAGA because they hated black people that much, and recently I've met black people that somehow went MAGA because they hated Hispanic people that much.
Honestly, other than the historic genuine anti-blackness in Latin America (due to the colonial history) IMO the west has just really done a good job of cultivating inter-racial community grievances. For instance the (now genuinely felt rather than just ignorant) "anti-blackness in the Asian diaspora community" is well known in the west, but the reverse is also absolutely true- and there's all sorts of other grievances each group can have with the other, etc. All capital needs to do is declare open season on one group or another (hate crimes and crimes against Asians for instance), play favorites and hypocrites, spew their usual narratives, prop up their favorite self-hating or other-hating POC talking heads, and provide conflicting incentives (like affirmative action despite its flaws, and on the other hand genuine and undeniable extreme racial discrimination against Asians) and while solidarity is not all lost, things get toxic as all hell.
I've had a lot of great, actual solidarity in the west, sure. But the truth is also that for the broader society I don't have much hope for racial relations (re: whites and minorities, or minorities and other minorities) getting truly and properly dealt with until the system of empire and white supremacy is stomped to the curb. Having seen how things could be like elsewhere (not to claim that Singapore as an example is perfect or even based, very far from it)- it's incredible the difference in how things are, when a society actually tries to integrate its people together into a harmonious yet undeniably diverse society- couldn't recognize it for what it was and appreciate it when I first saw it, but nowadays- well, the difference could not be clearer, flawed as it may be.