PATRIOTS FANS, PLEASE EXPLAIN how THROWING BEER CANS at the Superbowl PARADE is a way of showing appreciation for the team "Man Treated By Patriots Player’s Wife After Taking Beer Can To Head"

PATRIOTS FANS,  PLEASE EXPLAIN how THROWING BEER CANS at the Superbowl PARADE is a way of showing appreciation for the team  "Man Treated By Patriots Player's Wife After Taking Beer Can To Head" 

https://boston.cbslocal.com/2019/02/06/man-injured-patriots-parade-beer-can-forehead/