Portland cops have a long and proud history of alternating between acting like assholes and organizing slowdowns over the years. That being said the culture has improved greatly over the last couple of years. More good cops keeping bad ones accountable, more community outreach, etc. There has been a reasonably positive cycle of cops humanizing protesters which intern helps protesters, humanize cops.
PPB is not happy about ice agents ice agents fucking around in town from what I hear from a couple instances seen during the blowup frog era of protests.