Searches: "percentage + Komsomol + membership," "extent + Komsomol + membership," above with "Young Pioneers + Soviet," all of above + "1930s"
Two of my characters (twin brothers, actually) are born in 1920. Their parents have been factory workers since before the October Revolution, and at least one of them takes a similar job after leaving school. The family as a whole gets through the purges etc. with a relatively unscathed record. One of the brothers is somewhat ambitious, while the other one just wants to keep his head down and stay out of trouble; if either of them disagrees with the party line they keep it to themselves.
I gather that membership in the Young Pioneers and the Komsomol was rising at this point, and the Komsomol had more recruitment among urban youth. Would it be likely for either of them to join these organizations? Unusual for them not to?
Thanks in advance.
ETA: And answered! Thanks for the quick responses, everyone!