text: A photograph of a work in this medium shows the Cross of Lorraine painted in white over a wash of black paint that drips down in long streaks.
full_question: A photograph of a work in this medium shows the Cross of Lorraine painted in white over a wash of black paint that drips down in long streaks. That photo is part of a series by BrassaÃ¯ on this medium, which heavily influenced Jean Dubuffet. A group of artists in this medium used the symbol of a three-pointed crown and was called SAMO ["same"-o]. A work in this medium shows a man pressure-washing cave paintings, while another shows two members of the London police kissing each other. The film Exit Through the Gift Shop is about this medium, which includes a work in which a rioter with a backwards cap and a scarf around his mouth prepares to throw a bouquet of flowers. For 10 points, name this medium emulated by Jean-Michel Basquiat and practiced by the anonymous English artist Banksy.
first_sentence: A photograph of a work in this medium shows the Cross of Lorraine painted in white over a wash of black paint that drips down in long streaks.
raw_answer: graffiti [prompt on "street art"; prompt on "painting"]