Thousands of community organizations, labor unions and human rights activists filled the streets of downtown Los Angeles on Thursday, marking May Day, also referred to as International Workers' Day.

The strike could impact health clinics, libraries, trash pickup and more. Approximately 55,000 of Los Angeles County's workers have taken to the streets downtown in a massive, two-day protest ...

As a procession of construction trucks drives through the blackened streets of Los Angeles County's Altadena ... ABC News joined The Arbor Day Foundation and the Altadena nonprofit Amigos de ...