Whenever a patrol car entered the Oakland-Berkeley ghetto, it was tailed by the Panthers, who had their own communications system. After Don Mulford, the conservative Republican who represented Berkeley hills in the legislature, introduced a bill regulating guns, the Panthers decided to lobby the legislature. On May 2, 1967, they drove to Sacramento in a caravan, marched with their unloaded weapons into the capitol, and after getting lost inside the building, accidentally walked onto the floor of the Assembly bearing their arms. The legislators were frightened, the media became hysterical, and the Panthers, some of whom were arrested, never again lacked publicity.