Holding Crowd Control Method Used by Police

Puzzle 16 of Yoga Hard Pack

Question is: Holding Crowd Control Method Used by Police

and the answer is: KETTLING

Word Meaning:

KETTLING — A crowd control technique, used by police, where a hostile group of protesters or rioters are surrounded and not allowed to disperse, sometimes with the use of temporary fencing to corral and isolate portions of the group.

Definitions from Wiktionary.