Rev. Liz Walker, Roxbury Presbyterian Church; Jamila Bradley, Educator and Youth homelessness prevention advocate; Chris Gardner, Author, portrayed by actor Will Smith in the movie 'Pursuit of Happyness' engage in a discussion on preventing youth homelessness at Liberty Mutual Insurance in Boston on Thursday, December 6. Liberty Mutual focuses its philanthropic giving in areas that affect the region's most vulnerable communities, particularly youth who are experiencing homelessness or housing instability.