These thugs are tougher than the rest; it seems your usual strategy of a reasonable argument will not have the desired effect. Life as a philosopher-vigilante can be difficult.
"Bent-man!" shouts your sidekick, Popkin. "Use your Utilitarian belt!"
"Of course!" you interject. "Thanks, Popkin!"
You reach down to your waist and remove your grappling hook, which you immediately shoot vaguely in the direction of the ruffians. It misses, and they are not harmed, but you derive pleasure from the act of shooting itself, and therefore you believe it was the optimal choice.
"You'll never bring us to justice shooting like that, Bent-man!" shouts the largest of the thugs.
"Justice?" you shout. "I'm not concerned with Justice!"