When one's speech - rather than criminal activity - prompts an arrest, can a First Amendment retaliatory arrest claim be sustained where there existed some probable cause for the arrest? The Ninth Circuit says yes, but most other circuits hold otherwise, and SCOTUS will soon decide the issue in 'Nieves v. Bartlett.' Opposing parties in the pending case, Lisa Soronen (amicus supporting law enforcement) and Tyler Broker (representing the arrestee plaintiff), present their views.