A convicted cop killer spoke to a graduating class at a Vermont college Sunday despite outrage over his invitation, telling the students they should strive to make the world "better." Mumia Abu-Jamal spoke by video to 20 students receiving bachelor degrees from Goddard College in Plainfield. He earned a degree from the college in 1996. "Think about the myriad of problems that beset this land and strive to make it better," Abu-Jamal said in the video. Abu-Jamal's planned speech drew widespread outrage, including from his victim's widow.