Millions of protesters are taking to the streets of thousands of cities and towns around the world on Friday to demand urgent action on climate change.

And many ― from Australia to America, Germany to Kenya to India ― are coming armed with wittily worded signs. Some placards take aim at political figures, including U.S. President Donald Trump. Many lament the current climate crisis. Others pay tribute to 16-year-old climate activist Greta Thunberg, whose weekly school strikes in her native Sweden have partly inspired the latest round of demonstrations.

Check out photos of the signs below and look for climate events near you here.