I will usually defer to a person who lives in country or region being discussed, as I will now to you.
I don't live in Europe, but I do know that the biggest things America exports is & was culture. American films traveled the globe for a century now, and formed the basis for how many view Blacks.Often for decades before many in those places had ever seen Black people. Hollywood films with actors in blackface have definitely played in Poland for decades.
I have a young cousin who vistied this summer from France. Born and raised there...he told me that he never experienced racism. His father, who emigrated there as an adult, discusses race issues with me all the time. He sees subtle and overt racist shyt all the time. Slightly different variation of what happens here in the US . I'll be interested to hear his son's take on racism when he gets a bit older. The train is never late.
I globally agree but I think you overestimate the impact blackface movies left internationally. Most people have never seen or heard about one, except if you are into old movies.
To give you an example, last year there was a "big" controversy in France over the costume of a french white football player (Antoine Griezzman). Dude loves the NBA and the Harlem Globetrotters so he disguised himself to look like one for a 80s party. Obviously he has no idea or knowledge of the black face and its history like a large majority of french people. When he posted the pic, it's actually an english site (UK a different story than the rest of Europe) that called him out and started the international neg train he took. Only then french black twitter (with most of its members who knew about blackface having learned about it on social media following American news) took on and fueled the rest of the controversy. So if I had to gauge, I'd say that 85% of french people hearing about the controversy heard for the first time it was an old American racist practice. And the debates that ensued revolved around "we're not in the US so what's touchy over there should not be our issue for here" with plenty people of all colors defending it.
10 years ago this movie, where a racist white woman turns into a black woman, came out with little to no problem
and was even considered an anti-racist movie by the general population. But because no social media at the time, no real backlash outside of American press.
And there are plenty other examples like that. With virtually no black population in eastern Europe, I doubt anyone in the audience saw racist connotations to the performance. They just saw a dude cosplaying in Drake.
And for your young cousin, he may see it later or be oblivious to it. Depends on where he lives too, a little like in the United States. Growing up in the south of France I bet I saw even more racism than most of the Coli because no black community here.
But cultural differences matter in this case: Americans are way louder and honest than french people in general who are more reserved and cowardly, so it plays in how both express their racism too and how your cousin might perceive it.