During the Russian Civil War, while pursuing his studies, he contributed to the revolution efforts by painting posters.
When he did return to Paris he set down to write his book of anecdotal stories taken from the life of the artists from La Ruche.
Some art historians have repeatedly talked about a strong link between the painting of Van Gogh, Soutine, Chapiro and Bacon.
He opposed the demolition of La Ruche in 1967 and founded, along with Marc Chagall and Raymond Cogniat, a committee that fought against this move.
Chapiro's works can be found in museums in the United States (Chicago), Russia (Moscow) and France (Jeu de Paume, Paris).