Shazbot wrote:
I think it's ok to snitch when you're saving someone from harm.
I agree. Look at the crime and judge for yourself. Ask, "Are they really harming anyone with their actions?" If the answer is no, then just them let get caught on their own. Or maybe give them a friendly warning to remind them of the consequences. example, "Dude, if you get caught stealing cable, you're to be a lot of trouble." Or if you see a few kids smoking weed, "Uh, guys, you might want to do that somewhere else."
For things like assalt, child abuse, murder; of course, call the police.