Law abiding people buy guns for lawful purposes. The shooter was mentally disturbed and officials involved with his evaluations should be called into question for their previous assessments. There are plenty of instances where people have burned down entire city blocks playing with matches and if you google search for arsonists you will find that they wreak havoc every year using fire.
Mental health issues are becoming more prevalent in our society and gun laws need to be amended to reflect this new reality, however, as a law abiding person I do not want my rights trampled upon. Group punishment is not the answer. The laws governing gun ownership should be carefully rewritten to include closing up existing loopholes for gun acquisition such as ghost guns, private sales and gifting to prevent persons who could not lawfully obtain a weapon via a background check from having access to obtain one. As long as the extreme left only wants to take the guns away this will go nowhere and the standoff will continue unabated.