Definition: Woodstock refers to a festival held in New York City, originally known as "the Woodstock Festival." It was established by a group called the Farm Workers' Union on September 26, 1937. The festival began with a gathering of farmers and laborers to exchange goods and discuss issues affecting workers. The term has come to denote a time or period when an event occurred that brought about significant changes. For example, in 2008, the 4th Amendment to the US Constitution was ratified in response to the 1967 Supreme Court decision Brown v Board of Education, which declared segregation unconstitutional.