One note, Tango, is that Trump was not calling for Hillary's assassination. His loud mouth cannot resist sarcasm and this was his way of referring to the political movement of the 2nd ammendment defense of a large group of people, including the NRA. He was referring to political pressure and not physical violence.
But, as long as we're talking in this vein, I would also remind everyone of what Hillary said in 2008 when she was running against Obama and starting to fall behind. She was asked by a reporter if she should just drop out of the race since Obama was well on his way to getting the nomination.
Hillary promptly dismissed this notion with an answer that was ignored by the media. In paraphrase, this is what she said: "My husband, Bill, was behind in the race when he was running for governor. In addition, Bobby Kennedy appeared to be on his way to the nomination in 1968, but then he was assassinated in June. And, since we are not yet in June, it will be foolish for me to drop out of the race when anything can still happen."
Hillary, as you can see, directly referred to the potential assassination of her political rival -- and the media had almost nothing to say about it. But, when Trump even loosely mentions the 2nd ammendment people, the media savages him all over in claiming he called for someone to assassinate Hillary with a gun.
It is always good to understand the exact context of things.