A whole lot to protest, actually.
He ALLEGEDLY killed a man. Not been proven in court yet, and he is claiming that he's being framed.
Also even if it's true, terrorism charges are wildly inappropriate, and are being used here as a threat.
Then there's the matter of him being paraded around with a dozen armed guards, a clear violation of international law which guarantees the dignity of prisoners.
Finally, even if he deliberately murdered the CEO of a large healthcare provider, and deserves jail time, etc., there is still the fact that said CEO was complicit in the deaths of hundreds of patients that had claims denied, for the sake of endless profiteering.
So, yeah. Protest.
Yeah. Apparently they forgot to add "it's us we're the darkness" to their masthead.