I feel quite comfortable in big US cities as a person of non-white ethnicity. However, I speak perfect English and can easily pass off as an American (non-white of course :P) so Iโm 100% certain that this is a HUGE contributing factor. โRacial inclusionโ in the context of this discussion isnโt JUST about the color of your skin. It has a LOT to do with your command of the local language, knowledge of the local culture and how well you can communicate with the local populace.
When we talk about tolerance for DIFFERENT things, Iโd say the entire world has a pretty dismal record. However, lets assume an educated fluent in english digital nomad type of person here, since thatโs what is most relevant.
On the subject of the US, Iโd say I agree with @sander32 that we should take the survey with a grain of salt. The US is as big as Europe. If we took the survey in different US states and then compared that to European countries, it might paint a different picture. Doing the survey in NYC is very different from small town Ohio or Mississippi.
In Europe, I have almost always felt like Iโm โdifferentโ. Never ever has anything bad happened to me. I do feel that language is a big factor though and communication issues do come up often. Yes, there is a bit of rudeness too. Iโve found that Italians can be a little dismissive because I donโt speak to them in Italian. The same applies in some other places. A guy in Vienna once told me - you should speak German if you are hereโฆ (what? as a tourist? seriously?!). I was asking for directions by the wayโฆ
I was once asked for my โpapersโ in the Czech Republic when I flew in from France. I was the only brown person and there was no โimmigrationโ since this was an intra Schengen flight. No one else was asked for their papers or any questions at all (this was by the baggage belt that a โcopโ just came up to me). This was several years ago so not influenced by recent changes. This was NOT in Prague though. It was in a much smaller place in the Czech Republic and people in Prague were generally very friendly.
I would say that Scandinavia in general has been a good experience. Everyone speaks English so if I open my mouth and communicate in perfect English they already think Iโm well educated, etc. and this will challenge any internal biases people may have about me because of the color of my skin. Everyone has biases, no matter how small. I cannot demonstrate the same education level in Spanish or French or Hungarian. I know this sounds unfortunate but itโs true. The world is different for Asians/Arabs/Africans/etc who are well educated vs those who cannot demonstrably prove so. The new racism is classism.
I think the Netherlands would be fairly easy to get by in because people speak English in the cities. Same would go for Berlin in Germany and lots of European capitalsโฆ Smaller places, not so much.