Why is "GI Coffeehouses" trending?

Wikipedia Overview

GI coffeehouses were coffeehouses set up as part of the anti-war movement during the Vietnam War era as a method of fostering antiwar and anti-military sentiment within the U.S. military. They were mainly organized by civilian antiwar activists, though many GIs participated in establishing them as well. They were created in numerous cities and towns near U.S. military bases throughout the U.S. as well as Germany and Japan. Due to the normal high turnover rate of GIs at military bases plus the military's response which often involved transfer, discharge and demotion, not to mention the hostility of the pro-military towns where many coffeehouses were located, most of them were short-lived, but a few survived for several years and "contributed to some of the GI movement's most significant actions". The first GI coffeehouse of the Vietnam era was set up in January 1968 and the last closed in 1974.