In DC, a scumbag w/ a history of violence walks into the Holocaust memorial and kills an officer. Gun Free zone. Prohibited person out on the streets. The usual 'reasonable, common-sense' things that keep not working.
In Chicago, two 'children' aged 20 and 21, both prohibited persons with a long history of violence and criminal activity, in a 'gun free zone', murdered a Chicago police officer.
The 'fun fact' about this one? The alleged shooter had been in court just two weeks prior on his THIRD, yes THIRD, parole violation.
The judge let him go home.
What can you say to that?