Alvin M. Greene, the Democratic nominee for the United States Senate, was kicked out of a restaurant in Seneca after his companion got into a fight with diners, the police said. Oconee County Democratic Party officials had asked Mr. Greene to speak at their monthly meeting. But they rescinded the invitation after he was indicted Aug. 13 on a felony charge of showing pornography to a college student. Chief John Covington of the police said Tuesday that Mr. Greene showed up anyway and that a woman with him got into an argument with people at the restaurant. Party officials called the police, who removed the pair. No charges were filed.