https://en.wikipedia.org/wiki/Mulford_Act

Named after Republican assemblyman Don Mulford and signed into law by governor of California Ronald Reagan, the law was initially 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.

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Both Republicans and Democrats in California supported increased gun control, as did the National Rifle Association of America. Governor Ronald Reagan, who was coincidentally present on the Capitol lawn when the protesters arrived, later commented that he saw "no reason why on the street today a citizen should be carrying loaded weapons"