Preschoolers today

Now I'm certainly not one to judge - okay, now that the laughter has died down... It's certainly not my place to tell someone where they're going wrong in raising their kids, because I'm making plenty of my own mistakes and my glass house can't handle any stones thrown at it. But seriously, there's a kid at preschool who really needs a little more discipline. He just turned four, and:

• His mom let him get out of his car seat and out of the car THROUGH THE BACK WINDOW. OK, he didn't actually make it all the way out, but it was only because they were running late and his mom pulled him out before he could do it himself.
• He taught my daughter (and everyone else at school) to run around with pretend rifles yelling "FIRE!" and shooting at other people.
  
• He told a story to the kids at his table (I was there, as was his mom) about how he saw a movie where "there was a big alien and the guy shot...he shot...he shot...he shot!...he shot the alien and the alien exploded and got stuff all over the guy!"

And is giving little plastic cowboys and Indians (the cowboy with a rifle, the Indian with the full headdress, etc) appropriate for 4 year olds?

Jeez, how old am I to be complaining about this? I need to go get some Depends before those darned kids egg my car.