Don't sign up for it if you don't agree . 
Or ...sign up and take responsibility for your own actions.  I'm tired of people suing each other instead of taking good care of themselves and becoming aware of their situation. If there's a malfunction , Portland will take care of it in private .  Why must we humiliate a company, or city, in public for a mistake that was not obviously intentional. , sheesh!@$#!