An apparently persnickety art lover was so incensed about a painting in the Metropolitan Museum of Art being askew that he whacked a security guard over the head with a bottle. The NYPD is searching for a man believed to be in his mid-20s with a long beard, DNAInfo reports. (See this video.) Police say that when he approached the guard and told him a painting was crooked, the guard told him to report the problem to the information desk, CBS New York reports. As the guard turned away, the man smashed a bottle over his head, shouting, "Do your job!" per the NYPD. The man, who apparently cut his hand, left a trail of blood as he fled the museum. The 46-year-old guard was treated for a cut on his head. (More weird crimes stories.)