There were a number of factors, particularly social and political developments, throughout the 1950s and 1960s which created the foundation upon which a revolutionary Black workers movement was formed. One of the most important factors was the mood of Black rebellion in Detroit, and indeed throughout the U.S., and the increasing political development among Black workers in Detroit. The 1967 Detroit riot was one of the largest and most violent of a number of urban insurrections that swept the U.S. between 1964 and 1968. The Detroit insurrection was led by Black working class youth, some of whom were adopting the teachings of Marxism-Leninism and incorporating this ideology into their writings and actions. Many of those who would later lead the League of Revolutionary Black Workers were involved in the insurrection, including John Watson, who began publishing a radical ghetto newspaper called "The Inner City Voice" in September 1967, following the intense repression of the uprising.