I've spent time in remote Australian communities, where it's quite common to be peppered with 'white cunt' imprecations if out at night, especially anywhere near the canteen (bar). I found that quite confronting (occasionally frightening) in the moment, but it didn't have a big effect -- the people concerned were usually drunk and in a mess (you'll know what I mean if you've been in such places), I was a kind of foreigner (outback communities are not really 'Australia' in anything other than an bureaucratic sense), and clearly representative (whether fairly or not) of an oppressor. And, importantly, I could leave. A few hours drive, and I'm back in a nation where I'm 'the norm', and the indigenous Australian would be the outsider.
I'm trying to imagine the generalised life trauma that might ensue were I subject to this kind of suspicion and/or hatred all the time, in my own country (I do realise the author of the piece wasn't from the US). Many of course will rise above it more-or-less unscathed, but exceptional individuals are a poor indicator of most people's life chances.
Australia is similar to the US in this respect. Indigenous Australians stand little chance unless they happen to get lucky and land whatever weird combination of genes and upbringing that creates exceptions. In some ways it's worse here, as denial about causes is very close to universal -- there's no real equivalent to the US North/South divide. Our whole nation is locked into a kind of determined fluffy antebellum fantasy, where we didn't have a nation-founding war, but just a kind of sloppy de facto displacement of savages by imported middle-class suburbanites, regrettable certainly, but all too natural (so inevitable).
What a total stuff-up humans have made of everything.