Students in every corner of the U.S. have designated today National Walkout Day and marched out of their classrooms to protest gun violence on American campuses.

The big picture: Students from Los Angeles to Charlottesville showed power in numbers and demanded action from lawmakers on the one-month anniversary of the tragic mass shooting at Marjory Stoneman Douglas High School in Parkland, Florida.

A screenshot of my Snap Maps shows hotspots around the country where students are walking out of class. Screenshot: Erica Pandey

Lancaster, Ohio

Outside the White House

Parkland, Florida

Los Angeles, California