University of Chicago and later became a full professor at University of Wisconsin-Madison. Charles Becker married and divorced again. In 1905 he married a woman, Helen, a schoolteacher and later assistant principal. Their daughter, Charlotte Becker, died less than a day after her birth in 1913. Helen Becker always believed that her husband was wrongfully convicted of murder. Reform movement In 1902 and 1903, Becker was one of the leaders of a patrolman's reform movement agitating for the introduction of the three-platoon system. It would have significantly reduced the number of hours that the beat police officer was expected to work. In 1906, he was seconded to a special unit working out of police headquarters to probe the alleged corruption of Police Inspector Max F. Schmittberger. The inspector had earned enmity among patrolmen for giving detailed testimony to the 1894 Lexow Committee investigating police corruption in New York. Partly because of Becker's work, Schmittberger was subsequently prosecuted. Deputy Police Commissioner Rhinelander Waldo was so satisfied with Becker's work that when he was appointed as New York City Police Commissioner in 1911, Waldo appointed Becker, now a lieutenant, as head of one of the city's three anti-vice squads. Criminal activities Becker allegedly used his position to extort substantial sums, later shown to total in excess of $100,000, from Manhattan brothels and illegal gambling casinos in exchange for immunity from police interference. Percentages of the take were regularly delivered to politicians and other policemen. The area was under the patronage of Tammany Hall's leader, Big Tim Sullivan. Herman Rosenthal, a flamboyant Estonian immigrant who ran several illegal casinos in what was known as the Tenderloin District, was irritated by a police raid led by Becker on one of his casinos and the damage they left. He complained to the press that Becker "collected 20 percent of the take" there. In July 1912, Becker was reported by the New York World as one of three senior police officials involved in extorting money from Rosenthal's casinos. The day that Rosenthal was due to testify to a grand jury, he was murdered at 2 a.m. as he left the Hotel Metropole at 147 West 43rd Street, just off Times Square. Lefty Louie, Whitey Lewis, Dago Frank, and Gyp the Blood were seen to shoot him from their car, making no effort at disguise. They were separately tried, convicted, and sentenced to death and were ultimately