This story aired on Dateline earlier this month. Although this technically doesn't have to do with MA, I can't help thinking that if the staff at these facilities had received some kind of MA training, tragedies like this wouldn't happen.

"A father's quest": A lawyer sues his former client- a behavioral facility- when his own son dies under questionable circumstances.
http://www.msnbc.msn.com/id/8729932