2019 will go down as a year of worldwide unrest. In the last few months, protests have raged from Haiti and Venezuela to Iraq and Lebanon, from Russia to Canada.
Around the world, citizens are frustrated about inaction on climate change or angry about government corruption. Some protests have made international news; others have come and gone with less attention. But one thing many of them have in common is the presence of protest art.
The quality and wit of signs, murals, and costumes are striking, prompting viewers around the world to think about …