Shouldn't we learn something from the fact that Brown case witnesses paraded on CNN were PROVEN to be liars?

When the mainstream media tries to whip up a hysteria like it did in the Michael Brown case, we should reserve judgment and be skeptical. It is especially disgraceful that the main shaper of the narrative was Michael Brown's friend, who was an accomplice to Brown's robbery of the convenience store, and, it emerged last night, directly participated in Brown's assault on Officer Wilson at Wilson's car. The physical evidence supported the testimony of the numerous witnesses who supported Wilson, and it discredited the testimony of the witnesses who accused Wilson. Some of the latter when before the grand jury ended up changing their testimony or admitting they were not really eyewitnesses. People, don't trust CNN!