Maybe, if you remove firearms our "murder" rate will go down.  In some places where guns have been banned the criminals have resorted to using other tools since they could be assured that their victims could not fight back.  The number of deaths in a few places have been reduced by a tiny amount, however, the number of people seriously hurt by violent crime in those places went up by a large margin.  So, being crippled or worse is not just a hole lot better.  My preference, would be to reduce the number of helpless victims so that the criminals would be stopped or change jobs.