A criminal justice professor at Grand Rapids Community College has resigned after showing a video in class of a man having sex with a pig, students and a faculty representative said. A school administrator confirmed that Samuel Naves, 47, resigned Feb. 17, but would not comment on why he left. However, students and a faculty leader said the resignation had to do with the video. They said Naves was teaching an introductory criminal justice class earlier this year when he was going through video files on his computer. The video appeared on a projection screen and students begged Naves to...