(Portland, OR)  --  Police are looking for a man who's suspected of vandalism during last Thursday's anti-Trump protest and riot in downtown Portland.  KGW-TV reports authorities are looking for 20-year-old Mateen Abdul Shaheed.  He's described as African-American, standing six-feet-one, and weighing 200 pounds.  Police say a warrant was served yesterday at Shaheed's residence but he hasn't been found.