Thousands are expected to turn out for "No Kings" rallies against President Donald Trump's actions. Here's how organizers and authorities are preparing.

Seattle Police prepare for "No Kings" protests against a military parade on Trump's birthday. They aim for peaceful management and will only act if necessary.

With reporting by Alex Garland Crowds were measured by the mile Saturday as demonstrators marched from Capitol Hill’s Cal Anderson Park in Seattle’s contribution to a weekend of

Tens of thousands marched down 5th Avenue, with no reports of property damage, according to the Seattle Police Department. It was over 1.5 miles of people.

Those millions included an estimated 200,000 people in Los Angeles, 100,000 in Philadelphia, 70,000 in Seattle and over 50,000 in New York.

City and state officials say they are prepared for one of the largest protests in Seattle since President Donald Trump began his second term.

Approximately 70,000 people joined the "No Kings" protest in Cal Anderson Park before marching to the Space Needle and then the Seattle Center in downtown.

Tens of thousands of people marched peacefully from Cal Anderson Park to Seattle Center on Saturday afternoon during the “No Kings” protest, part of a nationwide demonstration. Protests begin in several western Washington cities,