The Spark is a small Trotskyist group in the USA affiliated to the Internationalist Communist Union led by the French group Lutte Ouvriere (LO). It was founded in 1968 by a handful of former members of the Spartacist League who had come under the influence of LO. It places a great emphasis on doing factory-based work and remains a very small group confined to a few cities. It produces a bi-monthly magazine called Workers' Struggle.
