What needs fixed? It's the criminals everyone needs to worry about, NOT the people shouting constitution.
People that think murder rates would drop if guns were "controlled" are ludicrous because if someone wants to murder someone with a gun and can't get a gun they go grab a knife, hammer, or crowbar, etc. Makes no difference, if someone is intent on killing mass children and can't get a gun they will make a homemade bomb or hijack a school bus full of kids.
Controlling guns or "gun control" should be the least of our worries here.
Fixing violent behavior, video games at young ages, rap music, etc should be the priority. Fixing Af-Am urban areas in big cities would also be another step in the right direction. Can't do that with a democrat in office though.