White social justice spaces, and for some reason queer spaces in general, I've found, do this in a few ways:
1) Tokenism: people of color are welcome, if they're acceptable, and palatable. Points if they're "exotic" looking and extremely queer (but you have to be OUT -- if you try to distance yourself from queer labels for safety or any other reason you're unpalatable and threatening)
2) If you're mixed you often aren't given space. You aren't "colored" enough to make the group look inclusive, and you aren't really white, so there's this kind of odd communication divide that they can't get themselves to bridge because you aren't "colored" enough for them to two-dimensionalize you and force themselves to listen to you as an object that represents an ideology they attempt to espouse materialistically
3) If you're poor but you don't talk about it in a structural way, but you throw the word "poor" around in a fun, nonthreatening, non-structural way like "I'm so poor right now" then you're okay but if you start talking about growing up poor and poverty things people get really uncomfortable and shove you out (kids from upper middle class families would rather live with rats as a performance than listen to you talk about how living in a space that allows rats is traumatic because you actually had them growing up because you grew up in neighborhoods where trash was an issue)
4) Trauma porn gets points: sometimes you can edge your way into a space by validating white notions of marginalization but only if you provide graphic descriptions of the trauma you've faced in your life. This has multiple functions: it confirms to white people that they're better off and it also allows them to then later talk about you and how pobresita, poor thing, the system really *is* just so terrible, let's throw an event about it. It also confirms an ideology based around victimization and allows them to continue to avoid accountability because it's the world that's messed up and there's nothing they can really do about it