Two of my favorite styles in the Avant-Garde movement our as follows...
Performance- performance started around the 20th century (Avant-Garde wise) and pushed many different aspects of the theatre on to the audience. Mainly breaking the "forth wall," and interacting with the audience by asking questions and involving them into what is called "Guerrilla Theatre." Two major artist that were involved in this movement are: Brecht, who asked his audience questions but would not give them answers, and Boal, who would scream at his audience.
Abstract Expressionism- Started in 1946 by an art critic Robert Coater. The movement was post WWII and it was mainly American best, placing New York at the center of the art world.
Jackson Pollock-

Barnett Newman-
Sources- Google and Preston




