Demi Lovato isn't too happy with the latest Gaga stunt at SXSW.  Lady Gaga was on stage and had a fan vomiting during her performance.   Gaga called it art but Demi doesn't agree. She said "that putting the word 'art' in it isn't a free card to do whatever you want without consequences."    She went on to say "Would you let someone bring a needle and shoot up on you? Addiction is addiction."