Geraldo's analysis of the Aaron Hernandez murder case is that Hernandez got enraged over a perceived insult. He fails to recognize that the same explanation accounts for Trayvon's behavior--going to attack Zimmerman when he had no reason to, other than that he saw that Zimmerman was observing what he was up to.
If Zimmerman had not come along, nobody would have heard of either of them...but one of the local homeowners might have come home and found his place robbed.
Apparently that "younger brother" that Trayvon supposedly went to buy Skittles for isn't related to him--he is a son of Trayvon's father's then-girlfriend.
Jerry Rivers always was a little slow on the uptake.