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."

A second round of "No Kings" demonstrations are planned for Saturday, Oct. 18. Here's where events are scheduled in Washington state.

The "No Kings" organizing group said rallies are expected in hundreds of locations across the country on Saturday in cooperation with civil rights groups and other organizations. The movement said it mobilized millions of people at its protests in June. Here is the latest map from their website showing where rallies are planned:

With chants, costumes and colorful signs, Washingtonians raised their voices against Trump's hard-line policies on immigration, the federal budget and more.

The demonstrations follow a wave of protests in June that organizers say drew more than 5 million people in cities across the country.

The Pacific Northwest’s largest “No Kings” protest is set to take place in Seattle on Saturday, alongside several other rallies across western Washington.

At a “No Kings” protest in Washington, D.C., Bill Nye tells NBC News’ Melanie Zanona that federal cuts to science funding, especially around NASA, are “thoughtless.”

Sen. Bernie Sanders (I-VT) will be headlining the “No Kings” protest in Washington, D.C., on Saturday. Of the 2,500 No Kings protests planned across the nation this weekend, one of the flagship events will be held blocks from the White House.