Students, parents and gun control advocates took to the streets of cities across the country on Saturday demanding lawmakers take steps to end gun violence.

Organizers expected rallies to take place in more than 800 cities, with hundreds of thousands of people turning out for a rally in downtown Washington, D.C., alone.

The "March for Our Lives" rallies also prompted demonstrators to put together a varied collection of posters and signs, offering pointed criticisms of politicians, the National Rifle Association and the nation's gun policies.

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Here are some notable signs:

Feidra Zeldin-Almanza is 16 from Tampa. Her brother has special needs and goes to public school. “I feel like I need to protect him,” she said. pic.twitter.com/9BuKgU1SX5 — Jen Kirby (@j_kirby1) March 24, 2018

Spotted at the #MarchForOurLives in NYC pic.twitter.com/lhDtAtQTcZ — AM to DM by BuzzFeed News (@AM2DM) March 24, 2018

In the future, protest signs will exclusively be riffs on memes



(thx @4evrmalone for documenting this shift in political discourse) pic.twitter.com/jSKLafFvva — Max Tani (@maxwelltani) March 24, 2018

We’re outside the WH for the #MarchForOurLives. Lots of kids but also lots of adults out here for the march. pic.twitter.com/RlbUyoQtsJ — Frank Thorp V (@frankthorp) March 24, 2018