From R-I, percentages who blocked a “family member or close friend on social media for reasons related to” the 2016 presidential election:
It’s conceivable that non-white Trump supporters have taken even more abuse from their social circles than white Trump supporters have. That may go some way in explaining that high figure. Or it could be that in The Current Year white non-leftists tend to be the most intellectually tolerant people of all, while white leftists are the least so.
One thing that clearly does not bode well for the prospect of some sort of future national reunification is how blocking those with differing views from one’s own is so strongly inversely correlated with age. This is not merely a consequence of younger people leaning more Democrat than older ones, either (a trend that is weakening significantly anyway)–the figures are virtually identical among Clinton and Trump voters under the age of 35. Political dissolution is on the horizon.