And do what, exactly? Provide the exact excuse the federal government is posturing for, allowing them to justify the actions that our various local/state governments are fighting to show aren't real? Should we start an insurrection, so that Trump can start gunning down citizens with impunity and incite even more dramatic acts of violence from his base?
Truly, what do you think Portlanders, as individuals or small groups, could be doing that would meaningfully prevent the administration from enacting their agenda? Portland isn't on fire. Trump says it is. Should they burn it down to prove him wrong?
You're considering it from a partisan viewpoint. Future administrations would do better to add more robust protections against this form of political intervention. The DOJ should be independent, and welcome to investigate or charge any politicians they can make a case for, past or present, regardless of which colors are hanging in the ~~halls of the great leader~~ Trump Ballroom.
Nobody is seriously saying we should never prosecute a political opponent. They're saying that political opponents shouldn't be charged by partisan actors.