posturing

posture

ˈpɒstʃə/

verb

gerund or present participle: posturing

1. 1.

   behave in a way that is intended to impress or mislead.

   "a masking of fear with macho posturing"

   synonyms:

   pose, strike an attitude, put on airs, attitudinize, behave affectedly, strut; More
2. 2.

   archaic

   place (someone) in a particular attitude or pose.

   "and still these two were postured motionless"

This is called posturing, show off and bully the same time. They'll pick those not in a postion to reply and try to run them over in full view of the public. After the show over, they are back into their empty nothingness. These very people should try and do the same to a bus driver in an European city.