To your immediate question -- I'm guessing there's some activity that's holding you together with these online friends? Difficult to say where to find more tolerable folks without knowing a bit more about how you've met these people so far. My assumption would be that it's a gaming community of some sort, though that's not always the case these days -- if it is though, maybe look for games with less toxic bases. Another thought is that if it is tied to games, many people go there for escapism (even if the idle chatter sometimes veers off-course) -- like my weekly gaming night has a general rule of no politics discussions, cause the doom-feeds are depressing enough. Depending on how often you meet with them, I'd possibly suggest working on filtering your comms a smidge -- you don't necessarily need to share every thought/opinion with friends, especially if the friendship is based more on something frivolous in nature. Again, RL friends may be better for that sort of more fulsome rel.
In terms of them getting offended, I think it's natural that people translate negative discussions about their race from 'others' as being personal attacks, even if there are attempts to phrase things 'politely' (which rarely work, and come off preachy/condescending in most cases). For example, commenting on the history of colonial Canada / the Church's treatment of FN to a newly immigrated white person, often comes off as essentially accusing that person of having a had a hand in the abuses -- FN seem to use 'colonial' as a slur about 'any' white person, even though many/most of them showed up far later than what'd gone on, and their families/histories have nothing to do with it. I guess it'd be somewhat similar, for comparison, to commenting that when white people showed up, FN on the West Coast were well known slavers, or that they didn't really have a form of written language, and how that could be construed as impolite/offensive to someone with that heritage if you constantly brought it up to them. Or if you translated things like DEI practices into authoritarian-imposed state charity for personal disabilities/failures -- "You get preferential hiring treatment/benefits, because FN are statistically poorer, less educated, less productive than other races on aggregate". Even if somewhat accurate, it'd be hard to encounter that sort of comment regularly, and not take it personally if you were a part of that demo. I imagine that's one reason Canada's spent so much effort trying to frame our DEI stuff in a more positive light, shifting almost all accountability off of individuals and on to 'systemic' stuff, heh.