My husband thinks im over protective of our 12 yr old son, i wont let him do things without a trusting adult. ?

Ive seen my friends 12 yr old son die while with kids and no supervision, our neighbor was kidnapped and only released because a woman seen it and followed the perpetrator until he finally pulled over and threw the little girl out, i have known kids of his age playing with guns when parent's aren't home and someone getting killed, also getting into drugs,playing dangerous games on dares with deadly results, a suicide at school in the bathroom, I don't want our son to become a statistic and my husband doesn't get it. I'm not paranoid but precautious. plus we live in a terrible city which I think is the worse place to raise a child alot of ual people live here, even if they don't have a record they always start somewhere and have a first time going after a child, so yea i am very protective of my child because I don't want anything horrible to happen to him. How can I get my husband to understand its not negative thinking, but being careful? He thinks I go overboard, but Ive seen with my own eyes too many children killed and even one is too many, how do you get someone to understand that bad things do happen to alot of people, even though nothing bad has ever happened isn't it better to be precautious then unaware and not caring? I don't want to end up with a hurt child because my husband doesn't get it or doesn't care about my concerns.