“What kind of person,” he wondered, “can command with only his eyes?
There are basically three ways to deal with violent radicals.
First, you can just kill them. This becomes a game of whack-a-mole.
Second, you can isolate them. The Jordanians here are doing a piss-poor job of that. If done well, it has all the finality of the first option, but without making anyone a martyr to their cause, and without all the weeping from their families. You could even subtly use them as hostages to ensure the good behavior of the people who love them.
Third, you can make them part of the system. Dealing with the hassles of organizing garbage pickup, fights with unions, and worrying about trucks at prayer time is going to sap the will of any radical.
But, dumping them together in one big open cell is a terrible idea.