It's not as if racism occurs in only one population, or that monkey is somehow a unique insult thought up in the USA in the 1920s. It has been an insult and canard of racism for thousands of years in dozens of cultures. Yes, in the US it has a particular context, and it is very bad. And Roseanne knew that. But the US did not invent racism -- instead the US is merely more transfixed and fascinated by race politics than other countries, sometimes to our detriment, in my opinion.
I think the USA deals with racism more openly than many countries. Many countries in Asia straight up accept it and many countries in Europe downplay the racism there or straight up deny its an issue.
Don't forget Latin America. From my experience, I'm sure the vast majority of Mexican one-percenters are cheering Trump on.
I'd also say that racism in the U.S. is pretty regional and dependent upon how well different economic classes integrate (economic class being correlated with race). I know the stereotype is that the South is a hotbed of racism, and for good reason--certainly there are horrible parts--but much of the Trumpy Bear racism and anti-immigrant sentiment seems to be coming from the Midwest--the area of the country most affected by the decrease in working-class jobs.
Coastal California may not be racist
by the traditional definition, but I'd say it's far less integrated
than many parts of the country. I'm sure if California were going on rough economic times you'd see a resurgence of racism
there and loud cries to "Build the Wall."