I don't hate anyone, but in the event my disapproval is the equivalent to hate by some Trump supporters, I'll answer these questions.
I don't have the full context of Hillary speaking about Kennedy's assassination or the linkage to her suggesting people do the same to Obama. At least, it's not present in what you posted. The title you bolded was "HILLARY CALLS FOR OBAMA'S ASSASSINATION" yet that article makes no mention of such call, only her making reference to the Kennedy assassination for reasons it took her husband so long to wrap up the nomination. That is complete and utter spin, to suggest she is calling for it. At worst, you could say Hillary is speculating a potential assassination.
Now to the bigger point I'd like to make: What Hillary did is independent of what Trump does. Lets assume Hillary explicitly said "Kill that Black, gay, Muslim man and his manly token wife too!!!" during the 2008 election, it doesn't make Trump's comment appropriate. Secretly, I find Trump's innuendo humorous... I'm a millennial with an apparent morbid sense of humor but I'm not running for the highest position in the world.