(sociology) herding instinct.

(sociology) A social tendency in humans to identify with and model many behaviors and beliefs after a larger group of individuals with whom they identify.

Used other than figuratively or idiomatically: see killer, instinct. / (idiomatic) The natural inclination to do whatever is necessary to succeed (including extreme violence)

Art of accurately shooting instinctively, without aiming and concentrating on the target.

plural of herding instinct

(psychoanalysis) Synonym of death drive

plural of death instinct