What do you suggest needs to be done? Even armed police officers were hurt or compromised yesterday. The perpetrator was able to get away with a lot before being confronted by someone armed. And in such unstable circumstances too (a highway...) kinda hard to aim back at a shooter without collateral. :(
You are in far, far, far more danger from government than you are from armed crazies.
Governments murdered 262,000,000 of their own citizens in the 20th century alone, and every one of those democides had citizen disarmament as a prerequisite, and most of those democides were committed by “redistributionist” governments.
So what do you suggest needs to be done by government to protect us from armed mass-murderers like government?