An estimated 500,000 people, largely youth, demonstrated in Washington, DC on March 24 against the continued mass shootings at schools across the country. Â Hundreds of thousands more mobilised in about 800 cities and towns.
The spark that lit the pent-up tinder of anger against school shootings — of which there have been 18 since January — was the response to the February 14 massacre at Marjory Stoneman Douglas High in Parkland, Florida.