Oh, what a tired-out argument you have there, friend! You see, your statement implies that Trump mocked a reporter because he was handicapped, when in actuality, he mocked a reporter who turned out to be handicapped. There is actually a difference, although your bias against him may prevent you from seeing it. Understandable, of course, but let me explain why that difference matters: Trump mocks anyone who attacks him, which is actually nothing new and not something that anyone, clearly, cared about, since he got elected. The fact remains that if someone turned out to have a disability, it doesn't automatically presume Trump insulted him because of said after-mentioned fact.
But, wait! You'll say, Trump had an interview with the same reporter before!
Ah yes, the same reporter from 20 odd years ago was it? It's quite interesting how people will pull up old interviews to fit their narrative, but ignore other interviews of Trump from the same time frame, because it conflicts with their narrative.
You know, sort of like this interview here...