I admit I'm amused at the comments by people shocked that people nonchalantly make slavery jokes to black people.
I mean, hell, one of my white friends used to call me her "little negro," among other things, and I lived in a big city. This type of "soft racism" or "casual racism" is a regular thing for minorities. It's not quite as innocuous as "can I touch your hair?" but it's still none-the-less upsetting. Most of us have grown accustomed to laughing it off (Protip: We are NOT amused, but shrugging it off is often easier than, say, making a complaint to HR and getting laid off because of it. Source: me making a complaint to HR then "mysteriously" getting laid off a few days later).
Some of the nicest, most "colorblind (eyeroll)" people in the country will let that mask slip real quick when a figure of authority, like, say, the President of the United States, makes it easier for them to justify letting an "off color" comment fly.
Being a light skinned blacked guy, who is often mistaken for not black (I usually get a lot of people thinking I'm Mexican or Puerto Rican), it's been enlightening to learn what white people I thought was cool really thought about black people. Yeah, real enlightening. Yet, not surprising.
It's sad, because there are genuine allies in the fight against those who want to harm and oppress marginalized groups (blacks, LGBTQ community, Jewish people, Mexicans, etc, etc), but the water gets muddied, and it's impossible to not feel lost and alone when people who you thought were your friends/allies, slip up. Depressing as fuck, really.