Trump supporters are more hostile to political correctness than Republicans as a whole are, and also far more hostile than independents and Democrats are. This is the case despite the fact that some of those Trump supporters are independents and Democrats. Even without cross tabs the unavoidable deduction here is that Republicans, independents, and Democrats who support Trump have less patience and use for political correctness than Republicans, independents, and Democrats on the whole do.
White men, who have the most to lose from PC nonsense, are correspondingly the most hostile. Blacks, for whom political correctness must be ubiquitous lest the obvious--that blacks living in WEIRDO societies are, on average, destined to be less successful and more dysfunctional than non-blacks--be made explicit, are the most supportive of it (see Black Live Matter).
If we look closely we can detect outlines of the Alt Right in the graphic. While the 18-29 category is considerably less white than the older age categories are, and the 30-49 category is less white than the 50+ categories are, people under the age of 50 are more hostile towards PC than their elders. Thus among these younger age cohorts, whites are decidedly less PC than whites among older cohorts. We're more skeptical of multicult fantasy talk than our parents are.