(Portland, OR)  --  A Portland Tribune reporter is calling for change after being shoved by a police officer after identifying himself as a journalist during a protest against police brutality downtown.  Zane Sparling tells KATU he was covering Saturday night's protest when an officer confronted him.  Sparling can be heard on video telling the officer he's a reporter, prompting the officer to say he doesn't care and then shove Sparling against a wall.  Sparling says he hopes the Portland Police Bureau can work on changing the way they treat journalists.