The London Bridge stabber masqueraded as a reformed jihadist, claiming his terrorist days were behind him and begging to be de-radicalized. Yet less than a year after convicted bomb plotter Usman Khan was released from prison, having served only half of a 16-year sentence for his part in an al Qaeda scheme to blow up London landmarks, he killed two people, including a young coordinator of the rehab program he so wanted to join. Another staff member of the program, called Learning Together, was killed, and three others were wounded.