I think term racists is not always good to use as it will simplify interesting topic. I liked that I.S. was talking that his releases were often meant to create... hmm. Was it discomfort? There are releases that most likely people will avoid simply because they appear so outrageous and offensive.
Things live slavery or "not being able to vote" etc, are curious elements, since if one starts to study history, or view global world with interest, one may start to notice so many interesting things.
Nowadays especially in "enlightened circles" self loathing approach is very popular. Even in Finland there has been this growing phenomena on kind of joining into competition confessing old sins. We have no colonial history nor we took part of Atlantic slavetrade, but it has been argued Finns submitted tar to boats used in slave trade. Indeed, yet Finland was at the time colonial land itself.
During Great Wrath (1713 – 1721), almost 10% of Finn population was abducted and taken as slaves. It is one of the largest number of slaves, if measuring size of population. I don't think there has been any finn noise/pe that acknowledges the history. I doubt there is relevance for anyone outside Finland. In case of finn slave trade, it was most definitely question of race & religion, kind of trad subjects of industrial culture. I would merely suspect that over here, most rather remember victorious part of history as identity.