Ask france, belgium, israel how those laws have worked recently.  Don't try to make this about guns-I know its hard-but this is once again about a criminal comitting crimes that no laws would prevent.  This is hate and evil incarnate pure and simple and we're in a defacto war.  One could draw a conclusion that radical islam is cultivated via tbe same media/medium that turns other "normal" citizens into mass shooters (ie violent video games, internet overoad, etc))-would you so readily lash out and advocate shutting down those rights?  No, thought not.