Conservative religious groups have offered various theories to explain why no dinosaurs have ever been found in a biblical epic, such as that they are hiding behind trees, or that dinosaurs are anatomically incapable of wearing sandals. There are also few dinosaurs in Soviet cinema, where they were declared by a committee in 1929 to be irrelevant to the struggle of the proletariat, and Stalin himself declared that the idea of a powerful monster terrorising millions of ordinary people was just silly.