Banned because they already have over 6 billion enemies.
(After a bit of googling, I found that every 5 in 1000, or 0.5% of the world's population is vegetarian. The current population estimate is 6,602,224,175 as of July 2007.
Therefore, 6,602,224,175 x 0.95 = 6,272,112,966.25 = The estimated amount of PETA's enemies at the moment, one of which is just a head and upper torso. Lay off the poor guy PETA!)