PHILADELPHIA - Several protesters are speaking out following the use of tear gas and pepper spray during a protest that spilled onto I-676 on June 1.Katharine Miller, 30, a UPenn employee earning a degree in social work, says she sat down directly in front of protester Diamonick Hough in the demonstration on I-676 to protect him."To think anything other than this man’s life was in danger if he was left alone with police officers, in my opinion, is that you’re not paying attention," Miller said.Her actions got Miller a face full of spray from a SWAT officer, who the police commissioner says she plans to fire and may be charged.Miller spoke Friday with her attorney by her side, whose firm also represents Diamonick Hough, who tossed a canister.