They may also have gone further, acting as provocateurs to encourage the use of lockboxes or “sleeping dragons” — lengths of PVC pipe into which protestors insert their arms to make it harder for police to remove them during a demonstration.

Seven protestors who used the devices while blocking a port entrance in Houston last December 12 have been charged with a felony and face jail terms of from two to ten years under what the Statesman calls “an obscure statute that prohibits using a device that is manufactured or adapted for the purpose of participating in a crime.”