California Leads Nation in Biker Gang Membership Since 1990s

California is home to a significant number of U.S.-based motorcycle gangs, including the well-known "Big Four": Hells Angels, Pagans, Bandidos, and Outlaws. These groups have deep historical roots, with motorcycling becoming particularly popular in California after World War II due to factors like population growth and favorable weather. Meanwhile, the Trump administration has intensified immigration enforcement in California through mass deportation raids led by Border Patrol chief Gregory Bovino, resulting in hundreds of arrests and widespread criticism. These raids have sparked protests and raised concerns about the treatment of detainees, including allegations of detainment without probable cause and harsh conditions in detention centers. California officials and community leaders have pushed back against these measures, highlighting the tension between federal immigration policies and local responses.