Sanok March of the Hungry in Sanok pl Lesko county Lesko uprising Zawiercie Bloody Friday (1930) pl
Material conditions deprivation led to strikes, some of them violent or violently pacified – like in Sanok (March of the Hungry in Sanok [pl] March 6, 1930), Lesko county (Lesko uprising June 21 – July 9, 1932) and Zawiercie (Bloody Friday (1930) [pl] April 18, 1930).