(Portland, OR)  --  Portland Police Chief Mike Marshman says he's not resigning.  Protesters have pledged they'll engage in "unrest" today unless Marshman is fired, claiming that demonstrators were hurt last week when officers used tear gas, pepper spray, and flashbang grenades against marchers.  Marshman tells KOIN-TV police didn't incite violence but were instead responding to people who threw "rocks, bottles, flares, and unknown liquids" at officers.