The Chjeno-Piast coalition was the political base of two consecutive governments formed by Wincenty Witos. The first, formed in May 1923, antagonized Józef Piłsudski, who resigned his government posts blaming Chjeno-Piast for the assassination of Gabriel Narutowicz. This government was forced to resign in December of that year in the effect of massive worker riots in Kraków. The second, formed in May 1926, had even less support and was soon overthrown by the May Coup organized by Józef Piłsudski.