Man Ray's genre was DADA, a movement that originated in Europe during World War I. It was an anti-war, anti-establishment movement that sought to challenge the status quo and traditional art forms. DADA was characterized by its use of absurdist and surrealist techniques, such as collage, photomontage, and found objects. Man Ray was one of the most influential figures in the DADA movement, and his works are still celebrated today.