There seem to be a lot of "experts" that think it works :-x...mass shootings and gun violence are awful in all seriousness. This issue will flood the media for a few days after every incident and then life goes on as normal. I personally choose to protect myself and my family instead of waiting 10 mins for the cops, and thankful I live where I have the right to do so. I do not think however background checks are unreasonable. This issue is one of many that is so polarized that there is no common sense way forward.