During this period, Sinclair was also active in radical politics in Los Angeles. For instance, in 1923, to support the challenged free speech rights of Industrial Workers of the World, Sinclair spoke at a rally during the San Pedro Maritime Strike, in a neighborhood now known as Liberty Hill. He began to read from the Bill of Rights and was promptly arrested, along with hundreds of others, by the LAPD. The arresting officer proclaimed: "We'll have none of that Constitution stuff".