Why is he being kept out of the news? Same reason that you’re being kept out of the news. It’s simple. You’re not a suspect and neither is he. There is no reason for you, or him, to even be on the radar.
You don’t arrest people because they wear bracelets similar to, but not the same as one in a blurry photo. If that’s the standard for a suspect in this case they’d have to detain a million people.
This is the one showing the shooter. Notice the white beads in the bracelet. It looks like two beads with spaces between each set. Do a Ctrl + to enlarge your view or paste it into windows Word and enlarge it there. In the video, it briefly shows a black man behind a black mask emerging out of the doorway, with gun pointed; after discharging the weapon you see this view here:
You do see videos of the gun being fired and a brief look at the shooter (a black man with a black mask on). So, were there people who know who that man was? Or is this the result of the resistance to be a snitch?