in protest, and pr move leaders here responded with their law, mandating gun ownership. despite never being enforced, many are convinced it s had an effect. our crime rate has been consistently one of the lowest crime rates in the me crow atlanta area since the ordinance past. reporter: 5,000 lived in the town and gun violence was rare. roughly 30,000 are in the swelling suburb now but according to fbi data, there are still fewer crimes here involving guns than cities of similar size. there s been no study that i ve seen that attributes having guns within the home as a reason why for that. this is our second talk on gun control issues. reporter: dr. joseph karateau is a political science professor who looked at kennesaw s law and studied research on guns in the home. you re 43 times more likely to shoot someone you know if you have a gun in your home, could be a friend, could be a family member.