Origin of "Rethug" (as in "thug"): The "Brooks Brothers Riot" part of Coup-2000

At its root, the word "Thuggee" means "deceivers," and this name hints at the methods employed by the cult. Bands of Thugs traveled across the country posing as pilgrims, merchants, soldiers, or even royalty, in groups numbering anywhere from a few men to several hundred. Offering protection or company, they would befriend fellow travelers and slowly build their confidence along the road. Often the impostors would journey for days and hundreds of miles with their intended victims, patiently waiting for an opportunity to strike. When the time was right, typically while their targets were encamped and at their most relaxed, a signal would be given—reportedly “Bring the tobacco”—and the Thugs would spring. Each member had a well-honed specialty; some distracted their quarry, some made noise or music to mask any cries, while others guarded the campsite from intruders and escapees. Thugs of the highest rank performed the actual killings. As a prohibition against shedding blood was at the core of Thuggee belief, the murders were performed in a bloodless fashion. The usual method was strangulation with a rumal, the yellow silk handkerchief each thug wore tied around his waist; but an occasional neck-breaking or poisoning helped to add some variety. It was a matter of honor for the Thugs to let no one escape alive once they had been selected for death.
http://www.damninteresting.com/the-thugs-of-india/