??? ???? ??? ? ?? ??? ?? ????? ????? ?? ?? ???? ??? ?? ????? ??? ???? ???? ??. ?? ???? ????? ?? ??? ??? ???? ??? ?? ???? ? ? ?? ???? ???? ?????? ?? ?? ? ? ??.But it's hard to say just how much effect these measures might have, mainly because little superior investigation exists on the effects of gun policies on mass shootings.He was contrary to ev