Original sentence: The selection of Nobel Peace Prize winners sometimes causes controversy, as the list of winners includes people who formerly used violent methods of problem-solving, but then later made exceptional concessions to non-violence in the attempt to achieve peace
Edited sentence: The selection of Nobel Peace Prize winners sometimes causes controversy, as the list of winners includes people who formerly used violent methods of problem-solving, but then later made exceptional concessions to non-violence in order to make it seem like they were trying to achieve peace