Barred for Life: How Black Flag's Iconic Logo Became Punk Rock's Secret Handshake

Similarly, check out "Barred for Life" https://www.amazon.com/Barred-Life-Iconic-Became-Handshake/d...

about the widely disparate groups of people who sport "The Bars" of Black Flag. (I've got mine next to The Zen Of Python on my arm)