I'm trans, gay, and part indigenous American. I have had more than one absolute bigot try to make and maintain a friendship with me. Sometimes for a while as ghosting doesn't always work on these types and they get abusive if you confront them directly.

If literally every other thing out of a person's mouth is about how much they despite resent, pity, look down upon, or want to kill or disenfranchise people like me (or people from another group), they're still a bigot. They think it's cool of course because they don't have to personally deal with or even think about the BS they're flinging at me, so more often than not they're happy to continue being "friends" so long as I don't demand they actually be friendly and respectful towards me. When I do, they are forced to think about what a disrespectful friend they've been and then suddenly they start crying about bring "attacked" or some fanciful bullshit.

Some people just have a higher frustration threshold for that shit and will keep bigoted friends around. But trust me, even if a "minority group" friend won't say it to your face they're going to be either crying, making fun of you, or talking shit about what a bigot you are to their truly accepting and understanding friends-- hell, sometimes just their accepting acquaintances they just made 5 seconds ago as they were discreetly rolling their eyes at you and your bigorty-- the second you turn away.

"But I have a black/gay/trans/whatever friend so I can't be racist/homophobic/trans phobic" is a running joke comment made about bigots in many a black, trans, and/or gay circle of friends-- and for a damn good reason.