No matter what side you’re on, demonstrations, rallies, marches and protests are a powerful tool of political resistance — but yes, you can often count on law enforcement to make an appearance. Here’s a practical guide to US guidelines and laws that can help you minimize your risks while you get your message across.

There is no "after Ferguson" | Photo: Jon Lowenstein

In advance of the grand jury verdict, photojournalist Jon Lowenstein talks about what he saw in Ferguson, Missouri. With photos and video.