Because the goal is not to disarm the badguys. The goal is to disarm law abiding patriots who would defend freedom
Ayn Rand ‘When the law no longer protects you from the corrupt, but protects the corrupt from you you know your nation is doomed.’
True. A transparent plan. They want a frightened , huddled group of subjects who have no guns at all as they listen to the orders of the mighty armed rulers. Before 1776 that was everybody.
The good people need to stop sitting around and take action. It does nobody any good for people to walk around with guns, but not use them when needed.
That is the goal ... these incidents will be but a walk in the park compared to the genocide that will come if we give up our guns.