Seeger in Barcelona!

I recently came across this story/legend/truth/I dunno about Pete Seeger. Seeger was, apparently, invited to perform in Barcelona, Spain in 1971. Spain was still under fascist rule by Francisco Franco. Seeger was told not to play any songs on a list that the fascist government devised. Most of the tunes were Seeger's most famous ones. So Seeger went on stage and just strummed his banjo, and, the whole 100,000 people audience sang all the songs!

Pete Seeger, 25 years old or so, entertaining laborers, soldiers, federal workers, and Eleanor Roosevelt, wife of the president of the USA, in 1944. Photo from wikipedia, by Joseph A. Horne - Photograph by Joseph A. Horne. Via Library of Congress site, Public Domain, Link