If you read what I wrote, I didn't say people with tattoos are stupid, [I have one that I'd be willing to bet is older than you are], I said people who get a tattoo on their face and complain they can't get a job are stupid - and I stand by that.
A responsible parent may give their child a weapon, when they believe the child is ready, just like you can get a tattoo, and that's fine. But giving a child a weapon that is designed to look like a military assault rifle, and posting the photo on facebook of child holding it, that's stupid and irresponsible.
If you can't see the difference, I just hope you aren't a parent.