Roller Derby!
It wasn't unusual for a Boomer kid of the 50's or 60's to have a Saturday or Sunday afternoon ritual: strolling through the living room to find dad glued to the screen while skaters went round and round a circular track whilst beating the crap out of each other.
Such was roller derby, a sport which captivated the nation over a time period of about forty years.
It all began during the Great Depression. Film publicist Leo "Bromo" Seltzer was struggling, along with the rest of the nation. He saw the success of dance marathons, and decided to cash in on the fad with a twist: he would sponsor similar marathons, only with everyone on roller skates. Sometimes, this would amount to a large number of skaters on a circular or oval track of limited size. It was inevitable that tired skaters, who might have been at it for days, would occasionally get into massive pileups.
Writer Damon Runyan saw potential for the sport cashing in on its potential violent side, and convinced Seltzer to sponsor an "all-out" contest, in which elbowing, punching, and whip-cracking were encouraged.
The public loved it, and roller derby was born. Male and female teams were organized, and the rules were the same for all, a unique situation in the world of spectator sports.

