Inevitably, the emergence of the "main genre" caused a struggle for leadership. In the late 1920s and the early 1930s, there were two major movements locked in this fight for supremacy: constructivists and "proletarian photographers" (to use the contemporary terms). The two groups debated on the purpose and the methods of photojournalism. Constructivists – including Alexander Rodchenko, Boris Ignatovich, Yeleazar Langman, Vladimir Gruntal and other members of the so-called "October" group – were accused by their opponents of overusing sharp angles, tainting "pure photography" with photo editing and even abandoning the "class essence" of the art. The constructivists responded by denouncing the members of the Russian Society of Proletarian Photographers – one of the most prominent of which was the famous reporter Arkady Shaikhet – for misunderstanding the revolutionary role photography was supposed to play in the country.