Supporter of Donald Trump. D+Trump = Dump
See also; Dumps, Dumpsters, Dumplings
Example:
Interviewer: So you support Donald Trump?
Interviewee: Yes, he says what I think. I should be allowed to hate people based solely on their religion and because they are immigrants. Despite mounting evidence that nothing he says is true, feasible or even likely to happen his words really resonate with me. I think I realized I was a Dump when he said he'd ban muslims. I mean imagine if Harry Potter had banned muslims. Then Voldemort wouldn't have been able to enter the country under that turban. It's science.
Interviewer2: How was the Trump rally?
Protester: It was overwhelming. I've never seen so many dumps in one place. The media's failure to educate the masses has finally come to bear and it may be too late to flush.