If you think that this was a protest then yeah it's worrying.

The feds case, which they did win convictions based on, was that they were terrorists who set off fireworks to lure police into an ambush, and there weren't more casualties because one of the members shot early and only injured one cop. An accessory to this who hid evidence is also part of the crime in the Feds case

Is this embellished by the Feds? I think so, it seems some of the group did not think this was the plan. But there did seem to be a plan and it did involve bringing guns, setting off fireworks, opening the gate and trying to break out the prisoners, and "not going quietly"