I just realized that I didn’t post the slides from a presentation I gave back in July. It dealt with regulations, laws, and technical issues concerning mobile devices and First Amendment rights. I cited several recent cases concerning the right to film the police, as well as some cases concerning compelled password disclosure (i.e. forcing citizens to reveal encrypted contents).
Usual disclaimer applies: by themselves, the slides don’t give the full effect of the presentation, but you might find them interesting.