NPR News

Marchers around the world will call for stricter gun control laws Saturday, including many who are demonstrating for a cause for the first time.

More than 500,000 are expected in Washington, D.C., alone, site of the main "March For Our Lives." There are at least 837 other events happening internationally, according to the event's official website.

A version of this story was first published by member station Vermont Public Radio.

It's a political insult that dates back to the 1800s: "He couldn't get elected dogcatcher."

Investigators with Britain's information commissioner searched the London headquarters of Cambridge Analytica on Friday amid reports that the firm harvested the personal data of millions of Facebook users as part of a campaign to influence the U.S. 2016 presidential elections.

There is no greater burn than pretending you've never heard of something when that thing has 2.2 billion monthly active users. And Elon Musk, CEO of SpaceX and Tesla, lobbed a fiery zinger at the world's leading social-media behemoth Friday when he asked on Twitter: "What's Facebook?"

He added fuel to the flame when he later deleted both company pages, becoming another tech billionaire jumping on the #DeleteFacebook movement.

Many lives in the Parkland, Fla., community were transformed forever following the shooting at Marjory Stoneman Douglas High School that killed 17 people on Feb. 14.