The battle for control of SAG-AFTRA has turned ugly, with allegations and threats of lawsuits flying between the feuding factions. Unite for Strength, the union’s ruling party, is calling on Matthew Modine and his MembershipFirst opposition party to publicly denounce the “rhetoric of hate” allegedly espoused by unnamed supporters of his who sit on the union’s boards of directors. MembershipFirst, in turn, is threatening legal action.