If reporters want to feel more respected (and apparently, safer) they might stop slanting their news articles and filling them with bias (on either side).  The reporter in question was asking questions out of turn and demanding an answer, the candidate's wishes be damned.  
Today's national and international reporters have gone from being someone that people and politicians actually want to speak to to someone to be suspicious of.  Donald Trump could make a statement like, "I enjoy eating chicken" and headlines would be twisted around to "Donald Trump slams beef and pork industries".
The media could be, um, objective for a change?  Maybe either await their turn or wait for the press conference, rather than waving around a mic in someone's face at a rally who obviously didn't feel like speaking to them.
The summary bodyslam and punch to the face was probably totally warranted.
Imagine if someone came up to you on the street, wouldn't take no for an answer and demanded you answer them?