Dada activities included public gatherings, demonstrations, and publication of art/literary journals. Passionate coverage of art, politics, and culture filled their publications. The movement was a protest against the barbarism of World War I, the bourgeois interests that Dada adherents believed inspired the war, and what they believed was an oppressive intellectual rigidity in both art and everyday society. The movement influenced later styles, movements, and groups including surrealism, Pop Art and Fluxus. Dada was an international movement, and it is difficult to classify artists as being from any one particular country, as they were constantly moving from one place to another.