it's still the parent's fault in cases where children are swiping their card, maybe raise your kids so they don't do that kinda thing
shit parents who cannot keep their children in line are the problem
What in the world?
They WILL do that. It's called puberity. There's no magic parenting trick to not fuck up. I fucked up when I was a kid/teenager. YOU fucked up when you were a kid/teenager. Hell, I still fuck up occasionally.
If people target your kid outside of your supervision there's shit you can do about it, unless you keep it literary on a leash which will fuck up your kid even more. Unless you somehow manage to get your kid to be completly open with you. Which is never gonna happen because that will be broken on his/her way of growing up.
Same reason you don't want your kids hanging out with the wrong crowd or it gets manipulated by an ultra progressive teacher. Shit like this you get to hear about after the fact.
Your kid isn't a robot, it's a human being that develops his personality. It's an open door to be manipulated.
Edit: And btw. I fully agree that parents need to raise their kids as best as they can. And parenting suck these days. But, that doesn't mean you can prevent everything, don't it? You wouldn't leave your kids in company with young criminials or drug users and say
*Welp, I raised him right. Ain't nothing gonna happen*.