Al Capone and threatened to arrest his family. He was charged with perjury for making these statements, but was acquitted after a three-day trial in July. In September, a Chicago judge issued a warrant for Capone's arrest on charges of vagrancy, and then used the publicity to run against Thompson in the Republican primary. In February 1931, Capone was tried on the contempt of court charge. In court, Judge James Herbert Wilkerson intervened to reinforce questioning of Capone's doctor by the prosecutor. Wilkerson sentenced Capone to six months, but he remained free while on appeal of the contempt conviction. Assistant Attorney General
Al Capone after key witnesses recanted their statements. An indication of the attitude of local law enforcement to Capone's organization came in 1931 when Belcastro was wounded in a shooting; police suggested to skeptical journalists that Belcastro was an independent operator. The 1929 Saint Valentine's Day Massacre led to public disquiet about Thompson's alliance with Capone and was a factor in Anton J. Cermak winning the mayoral election on April 6, 1931. Capone was widely assumed to have been responsible for ordering the 1929 Saint Valentine's Day Massacre in an attempt to eliminate Bugs Moran, head of the North Side Gang. Moran