 Many Mexican rock stars became involved in the counterculture.The three-day Festival Rock y Ruedas de Avándaro, held in 1971, was organized in the valley of Avándaro near the city of Toluca, a town neighboring Mexico City, and became known as "The Mexican Woodstock".Nudity, drug use, and the presence of the US flag scandalized conservative Mexican society to such an extent that the government clamped down on rock and roll performances for the rest of the decade.