Well let's do something, like improve care for mentally Ill, and figure out how to keep guns out of their hands. Lets do something like fix the southern border where drugs, gang members, and guns are flowing into the country and killing people. The vast majority of murders are caused by handguns, not AR15's, or any other Ugly looking rifle. People raise hell about mass murders in US and they are horrible but are a tiny percentage of the problem.
Let's figure out how to deal with young men mostly, black, (who as a percentage of population by far commit the most gun murders), figure out how to reduce black on black murders and you will make real headway into murders. In the last 2 weekends in Chicago, 10 killed and 26 wounded one weekend and 5 killed and 27 wounded last weekend. But no, we elite white racist spend our time bitching about the 5 in Texas while ignoring the 15 in Chicago over the last 2 weekends. The aim of politician's isn't to deal with murder in the US. It never has been.