subbotnik

thumb|right|Vladimir Lenin at the All-Russia Subbotnik in the Kremlin grounds, Moscow, May 1, 1920

Subbotnik and voskresnik (from 'Saturday' and , 'Sunday') were days of volunteer unpaid work on weekends after the October Revolution, though the word itself is derived from (subbota for Saturday) and the common Russian suffix (-nik). The tradition is continued in modern Russia and some other former Soviet Republics. Subbotniks are mostly organized for cleaning the streets of garbage, fixing public amenities, collecting recyclable material, and other community services.