Well gun bans don't stop crime

"The man and an accomplice, wearing ski masks and waving machetes, stormed into a club in a western Sydney suburb shortly before 9 p.m. Wednesday and yelled at patrons to lie down as they tried to rob the cash register, police said Thursday."
http://apnews.myway.com/article/20080228/D8V32VRO0.html

In this case alert citizens did stop the crime