york. an explosive debate on piers morgan over a tweet. it was written by george zimmerman s brother and has everything to do with trayvon martin. here is robert s tweet. pake toure is worth 1,000 words. that caption headlining side by side photos of trayvon martin and a 17-year-old boy accused of killing a baby in georgia. and you can see in the images, both teenagers are giving the middle finger. one of thumb is accused of murder, the 17-year-old. the other is dead, trayvon martin and george zimmerman is charged with his murder. robert zimmerman jr. now says his tweet was a mistake but meant to make a larger point about how the media portrays trayvon martin. i made a tweet, here are two individuals of two individuals. one accused of a crime, one in