A furious Massachusetts mom hurled explosive allegations toward a politician who had been addressing the graduating class during a commencement ceremony. Moises Rodrigues, 64, elected as Brockton’s first black mayor last November, had only expressed his pride in addressing Brockton High School seniors before a woman, who was not identified, interrupted the speech on Saturday. “You have to f–king get out of here,” the woman shouted, much to the shock of the students, in the moment caught on camera. “You know what you did to my daughter.” She gesticulated wildly before being surrounded by cops. The woman continued to scream…