Speaking at a "No Kings" rally in Washington, D.C., Bill Nye, the former host of "Bill Nye the Science Guy," urged lawmakers to “stop the abuses of this petulant president [Trump] and his circle of sycophants,” declaring, “No thrones, no crowns, no kings."

As “No Kings” rallies return nationwide Saturday, here’s what to know about your right to protest safely and legally.

In the weeks since President Donald Trump issued an executive order titled “Designating Antifa as a Domestic Terrorist Organization,” he and his administration have repeatedly and forcefully sought to describe left-wing protesters,