 Complete the following phrase:  In 2006, the cause was joined by teacher Barry Bradford and three of his high school students from Illinois: Mona Ghadiri, Agnes Mazur, and Callie McCune, as well as Professor Steven A. Drizin of the Northwestern University School of Law, Center On Wrongful Convictions. They led a coalition to convince Mississippi Governor Haley Barbour to issue Kennard a full pardon. Bradford had worked with other high school students to collect information that led to the successful 2002 prosecution of murderers of the three 