I looked all thru your link to find something, anything, to back up your assertion these people were not prosecuted due to some sort of white vs black component, and can find none. In fact, you link states that one of the individuals has actually incurred legal penalities .I've also looked elsewhere on the web. WTF are you talking about?

The right wing outrage over this incident has always been a joke anyway, a bunch of white guys who carry guns at political events complaining about a bunch of black guys carrying guns at a political event, what a bunch of hypocrites.