Street art

The term public art refers to art that is in the public realm, regardless of whether it is situated on public or private property or whether it has been purchased with public or private money

Graffiti art as a term refers to images or text painted usually onto buildings, typically using spray paint

The term site-specific refers to a work of art designed specifically for a particular location and that has an interrelationship with the location

PESTS was an anonymous protest and pressure group of artists operating in New York in the 1980s who aimed to expose the discrimination, exclusion and tokenism directed towards artists from racial minorities by commercial galleries and public museums

The radical 1960s English group King Mob called themselves the ‘gangsters of the new freedom’, and combined hard-edged politics with the disruptive potential of Dada. Kunzru looks back at their world after sifting through their archive, which has recently been acquired by Tate.

His projects have included pushing a block of ice around Mexico City until it melted, letting a fox loose in the National Gallery, London, at night and persuading 500 Peruvians to move a giant sand dune by shovel. He has worked with a wide variety of media such as painting, video projection, animation and sculpture to produce art that can seem as ephemeral as it is poetic. Francis Alÿs sees himself akin to a story-teller: “If the story is right, if it hits a nerve, it can propagate like a rumour.” Tate Etc. explores his work on the eve of his retrospective at Tate Modern.