Everyone should watch the entire interview. It was enlightening. No suggestion of banning anything and a logical explaination of why playing cops and robbers or cowboys and Indians or paintball or air soft is different
and produces different results. It was a very informative interview and I suggest watching it before dismissing it. This guy is the foremost expert on the subject. He wrote the book on teaching soldiers and cops how to kill an opponent.
Grossman suggested to ban in here:
http://www.killology.com/