• Hundreds of thousands of demonstrators gathered in Foley Square in Manhattan’s Financial District on Friday as part of the Global Climate Strike, a worldwide series of protests against climate change.
  • 16-year-old Swedish climate activist Greta Thunberg, the catalyst for the movement, attended the New York march.
  • The most creative signs repurposed memes, made puns, and melted the Earth, but they all shared the same sense of urgency for the planet.
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Millions of people are marching against climate change, and New York is no exception. In fact, it’s the main event.

Hundreds of thousands of demonstrators gathered in Foley Square in Manhattan’s Financial District on Friday as part of the Global Climate Strike, a mass movement protesting inaction against climate change. It’s just one of hundreds of similar strikes in 156 countries around the world. And like those strikes, marchers have made their own signs to get their message out. That includes handmade signs: cardboard, magic markers, spray paint, and in one case, a plastic water carton.

The catalyst for the strike is 16-year-old Greta Thunberg, a Swedish climate activist who gained worldwide fame after skipping school to protest in front of the Swedish parliament building in Stockholm. Thunberg attended the New York where she was slated to be a key speaker.

Read more: How 16-year-old Greta Thunberg became the face of climate-change activism

While demonstrators of all ages marched down Broadway, the overwhelming majority were students. Most of them weren't skipping class, either - New York City's Education Department gave students permission to attend the strike. Teachers in New York, however, are barred from participating to avoid involving politics in the classroom.

Here are some of the demonstrators' most creative signs.


Greta Thunberg made her way to the march shortly after it began at 12:45 pm on Broadway.

Foto: sourceIvan De Luce/Business Insider

Then she brought out her hand-painted sign, which says "School strike for climate" in Swedish.

Foto: sourceJohannes Eisele/Getty Images

Before the march began, protesters gathered in Foley Square, many of them carrying replicas of Thunberg's sign.

Foto: sourceIvan De Luce/Business Insider

Most signs expressed a sense of urgency. Some demonstrators climbed onto lampposts to get their message out.

Foto: sourceIvan De Luce/Business Insider

Others gathered together in the grass, like the employees of Patagonia Sports in Manhattan.

Foto: sourceIvan De Luce/Business Insider

Many of the demonstrators were young — some of them missed school to join the ranks.

Foto: sourceIvan De Luce/Business Insider

Some signs focused on the environmental impacts of climate change.

Foto: sourceIvan De Luce/Business Insider

Others blamed politicians, like this sign featuring President Trump and Senate Majority Leader Mitch McConnell.

Foto: sourceIvan De Luce/Business Insider

Some protesters made signs to give away.

Foto: sourceIvan De Luce/Business Insider

Others got creative with props.

Foto: sourceIvan De Luce/Business Insider

Around 12:30 pm, the marchers moved from Foley Square down Broadway, toward Battery Park.

Foto: sourceIvan De Luce/Business Insider

This sign features the eponymous characters from the TV show "Rick and Morty."

Foto: sourceDavid Slotnick/Business Insider

Some signs were simple and stark.

Foto: sourceDavid Slotnick/Business Insider

Others adapted meme culture for their message.

Foto: sourceDavid Slotnick/Business Insider

Signs weren't the only ways marchers supported the cause — some wore T-shirts.

Foto: sourceDavid Slotnick/Business Insider

This sign pointed out the effects of climate change on birds while having a sense of humor.

Foto: sourceDavid Slotnick/Business Insider

Some signs took humor to a new level.

Foto: sourceDavid Slotnick/Business Insider

But the overarching messages many demonstrators had was the importance of science — especially signs from student protesters.

Foto: sourceDavid Slotnick/Business Insider