Just found a link to something posted by Jenny ages back.
http://www.bulletproofbaby.net/ aka, how to make your child bullet-proof, with "my first riot helmet" and a baby sized riot and has a short clip which apparently features a mother doing a fully-automatic live fire exercise on a pram with a baby on board.
After watching it my jaw literally fell open and it took a conscious effort to close it.
I had a moment of disbelief, and a bit of googleing reveals it's a hoax, it's a marketing site for the movie, "shoot 'em up" (it's subtlety mentioned on the front page, which I did pay attention)
Best piece of marketing I've seen for a very long time.