“Protest!” is a leaflet written by Zofia Kossak-Szczucka, a Polish novelist, social activist and co-founder of the underground Catholic organisation Front for the Rebirth of Poland (Front Odrodzenia Polski, FOP). Illegally distributed on 11 August 1942, the pamphlet called for solidarity with the Jews who were subjected to brutal terror. On 22 July 1942, the…