For the purpose of debating this does *not* include those persons that are actively interfering with an arrest (i.e. creating an obstacle for an arresting officer or striving to resist arrest.)
There have been a growing number of news items of police confiscating cell phones of bystanders recording arrests or confrontations with officers... or to the extreme of the person taping the unfolding events being arrested for 'obstruction of justice.'
Do you believe that people have the right to record actions of police officers (including arrests)... particularly when it occurs in public -- or should that be against the law?
Here are a few different news stories for a point of reference:
Man Arrested After Taping Arrest With Cell Phone
Fall River Man Arrested For Videotaping Police Officer
Oklahoma Police Beat Man to Death Before Confiscating Cell Phone Camera that Captured Beating (Looks like a blog 'news' site)