Ernő Kállai
Ernő Kállai was a Hungarian art critic who was involved in the promotion of and theorisation around Constructivism.
He encountered avant-garde art upon visiting the MA gallery of Lajos Kassák and soon contributed to MA under the pseudonym Péter Mátyás.
Following the suppression of the Hungarian Soviet Republic, Kállai went to Berlin but stayed in touch with other Hungarian refugees from the avant-garde art movement in Vienna.
In 1923 he co-wrote a manifesto with Alfréd Kemény, László Moholy-Nagy and Laszlo Peri.
