[2] Named after Republican assemblyman Don Mulford and signed into law by governor of California Ronald Reagan, the bill was crafted with the goal of disarming members of the Black Panther Party, which was conducting armed patrols of Oakland neighborhoods in what would later be termed copwatching.
[3][4] They garnered national attention after Black Panthers members, bearing arms, marched upon the California State Capitol to protest the bill.
[5][6] Assembly Bill 1591 was introduced by Don Mulford (R) from Oakland on April 5, 1967, and subsequently co-sponsored by John T. Knox (D) from Richmond, Walter J. Karabian (D) from Monterey Park, Frank Murphy Jr. (R) from Santa Cruz, Alan Sieroty (D) from Los Angeles, and William M. Ketchum (R) from Bakersfield.
[1] A.B 1591 was made an "urgency statute" under Article IV, §8(d) of the Constitution of California after "an organized band of men armed with loaded firearms [...] entered the Capitol" on May 2, 1967;[7] as such, it required a two-thirds majority in each house.
Both Republicans and Democrats in California supported increased gun control, as did the National Rifle Association of America.