We are all vulnerable
What are you gonna do?
Ever have these thoughts, thinking of a random shooting or senseless violence? - That one day something like this can happen to you, and there is little you can do about it...
And so you conclude that there is nothing you can do about the unknown, and that its best not to worry, because it is outside your control... What are you gonna do? Nothing.
People are spectators
People speculate
People are voyeurs
At this point, the assassination is broadcast, and where an individual is attacked, all are threatened.
So, it is the same as with your thoughts of doubt - what can we do? Well, it is different in a society where we interact with each other... we can try to prevent such things, hold to account the failures, identify the threats. So, a incident like this is both personal and social, and so we accept it as out of our control, but try to prevent them as well.
But our society is sickened, and social media spreads this sickness and there is malice and lust for power, and power despises the weak - in which we are all vulnerable... And so the wicked see our nature as weakness - watching, laughing at us speculating in our conundrum where we are powerless to undo others crimes. We are so gullible as to believe others are like us - and among the decent, we are the same - but the wicked are sick, and adverse to their own nature - thinking they are not the same - contemptuous and snared by fear in trying to conquer it. They're afraid. They react to fear with aggression, and it is hard for them to accept their own vulnerabilities, because they exploited others, and all they've really accomplished is made their own fears syndicated. And assassinations are a symptom of this fear.
Democrats used to be the peaceniks. Now look at them. They've been overcome with fear.