Stop consuming their product. I've never wanted to body slam them, or even hit them. Journalism is dead and has been for very long time now.
Get rid of TV, that herd needs to thinned/culled (in the metaphorical sense). Lower ratings will either drive them to double down further, which will reduce their ratings (MSNBC and CNN) to the point they are unprofitable. As is happening to newspapers. (IIRC, despite all their Trump hate, NYT and WaPo are both shedding readers at unsustatinable rate.)
Same can be done with TV reporters. (Although the person in this case was a foreign newspaper reporter, They can't be doing well either. )
Anyway, the reporter seemingly violated the rules of civil society by repeated ignoring the request of candidate. While violence is not the answer, a goo dressing down by his fellow reporters definitely was in order. Even a simple, "Stop, the he'll answer questions once we begin the presser." from one of his fellows should have been all it took. But in today's world of "gotcha" reporting, that doesn't happen. I don't mind candidates being asked hard questions. Which didn't seem to happen in during the prior administration, and I would hope that this reporter is going after the other candidate(s) in this race in a similar manner, but if not, why not. Because if he being a dick to both sides then fine. But if he's doing it to just the one, then he's not a reporter, but an agent provocateur.