“then seems, that when a major assassination occurs in high public visibility, there is a message or a manipulation of public opinion which is intended by the responsible authorities.”
Well DUH!
As far as I know Democrat Clinton was never shot at.
Non Democrat Trump almost was killed twice.
So who is the dangerous people?
Democrats are the problem!
Simple Answer:
https://en.wikipedia.org/wiki/Propaganda_of_the_deed
Excellent case-in-point being Charlie Kirk. Other than a brief moment of conservative outrage, after about a week, the MSM and the (Anti)Social Media as well as all the lefties loudly and ebulliently celebrating the “deserved” death of a “Fascist, who spread hate” were able to paint it as a “Blows Against The Empire” level of cultural victory. (or at least that’s what the loudest and most ubiquitous parts of our culture would have us believe).
Opportunity - and demoralization of victim’s adherents....