The HBO Sports documentary Broad Street Bullies, a look at one of pro sport’s most polarizing teams, the legendary Philadelphia Flyers Stanley Cup championship squads of the 1970s. This exclusive presentation tells the backstories of these engaging and colorful athletes, who won back-to-back Stanley Cups in 1974 and 1975 with a bold, aggressive style that sparked controversy and criticism.

In 1976 with the Cold War raging, the Philadelphia Flyers took to the ice to play the unbeaten Russian Red Army team. What happened that day went down in sports history.