In 1990, nearly 50% of white respondents to a survey indicated they'd oppose living in a neighborhood where half the residents were black. In 2014, under 20% would oppose it and over 80% are indifferent or would favor it.
Going back further than 1990 only serves to bolster that fact.
"Throughout the 20th Century, racial discrimination was deliberate and intentional. Today, racial segregation and division result from policies and institutions that are no longer explicitly designed to discriminate. Yet the outcomes of those policies and beliefs have negative, racial impacts, namely with segregation."
https://en.wikipedia.org/wiki/Racial_segregation_in_the_Unit...
At least in North America, racism and white supremacy is a fraction of what it was 50 years ago.
If you go by the number of hate crimes reported to the FBI (which has reporting bias), it has gone up, but it's still lower than it was during the late 90's.
Things have improved quite a bit. There was just a period where things were brushed under the rug and not acknowledged, but giving internet access to everyone has made us aware of what's been ignored for so long. There are clear bumps of race-motivated crimes or discrimination sometimes, but there's a pretty obvious downward trend in acceptance of it.
There remain many dark corners, where these pathologies flourish.
Social media just changed the landscape. Engagement maximizing algos birthed outrage cancel culture. It lets people find each other. It accelerates radicalization, both left and especially right leaning.
And the filter bubble keeps these things out of the public sphere.
I think that we, in 30 years, will look back at the rise of right wing populism as a symptom of a positive development. The populist parties do get a lot of votes, and if anything I believe that is a sign that the voters have not felt represented by the power. Which, in turn, I also believe is why the populist party supporters are so loud. If I actually believed that the government did not represent the people, I would be loud as well.
When the "anti establishment" has become the establishment I think the democratic process will end up being stronger with a discussion climate that better represents the population.