do away with gun free zones

this gun free zone is no more than a killing ground it has happen again this time children in conn,it has happen at VT,the mall shooting,the theater,and countless other in just the last few years all of the lives could have been spared if just one person could have been there with carry permit that has been trained how to use a firearm proplery. The gun free zones are not working.They are nothing but a killing ground for distrubed people to go to lay wast to other people with no way to protect them selves