No one is denying racism exists, trust me on that.
The rest of the people you are bringing up are just media whores.
As far as I know GZ never requested any help from any of the media whores just a fair trial which he received. Other people got involved in this case, right AND left and this turned into a travesty not because of what happened to Trayvon but because it shows how people are so easily manipulated by the media they tune into and how they form their opinion based on this slanted media.
Note that this is true for the right and left.