I don't have the time or energy to explain to them that reverse racism doesn't exist now on top of my attempts to point to how their other politics are dodgy, and that their vociferous defence of the privileged is nothing short of queerphobic and racist. There's only so many times I'm willing to point out their behaviour to them and introduce the directions they need to go to overcome them. They seem adamant that they will not imagine things beyond liberal individualised interpersonal relations.
dellitsni, you don't get it, you need to go fix your shit.
There are few circumstances under which this wouldn't automatically result in a global ban; this seems to be one. Users invested in this user need to step up and do work with them right away.
Edit: Changed the title to reflect a a less threatening position after u/selver accurately pointed it out in the comments.