No. Think again.

It is quite clear that guns are not the cause of these events. Thus, as you have pointed out, the frequency of such events can fluctuate due to societal factors outside gun control.

However, with no guns there are no shootings. Guns are the cause of such outrages becoming shootings. Guns are the cause…

You might find this amusing- Mitchell and Webb skit on the original telling of the parable of the Good Samaritan.

“concerned residents altered police” should probably be “concerned citizens alerted police”. Although, to be fair, the police might have been altered as well.