The younger brother was arrested on suspicion based on his Facebook activity, held for a couple of years at Rikers Island, and never charged.
IMO the outrages are (1) the older brother received a harsh sentence for appearing in pictures (his gun charge for owning an illegal, non-functional gun resulting in probation) and (2) the younger brother was held for two years with no trial.
It's a very long story and I don't honestly expect everyone on the internet to read it closely or all the way through. But to be clear, it was the older brother who owned a gun. Law enforcement never produced evidence that Jelani, the younger brother accused of double attempted murder, owned or used a firearm.