Apparently your life experiences in the sixties did not include taking a detailed look at what was going on in politics.
You're right I didn't, I was a kid. But I would have noticed if Chet Huntley and David Brinkley would have been editorializing, blaming a piece of hardware, or a law abiding general public, for crimes committed by a few. My grandfather had the news on a lot, and I know he would have had something to say too, that I would have clearly remembered.
A look at actual history tells us that the assassination is basically the start of the modern attitudes about gun control. In the year after Kennedy was killed there were a dozen gun control bills introduced in Congress.
And NONE of them were passed the year after Kennedy was killed. With a Democrat president, Democrat house, and Democrat senate. It took 4 more years. Nothing like today's Democrats.
I would suggest that you drop this line of argument. Like many of your claims, this one does not stand up to the light of day.
Nothing much more to say about it. If today's Democrats want to re-write history and try to claim they're just like the Democrats of the 1960's, we'll see how it goes. Maybe there are enough young people that haven't had good history teachers who will buy it. We'll have to wait and see how thoroughly Hillary and Bernie analyze the 60's Democrat statement "Ask NOT what your country can do for you, ask what you can do for your country." Just what today's free-stuff seeking Democrat voter wants to hear.