Citizens and trade unions across the continent are taking to the streets for marches commemorating the labor movement and pushing for peace.

Hundreds of masked and hooded anarchists smashed shop windows, torched cars and hurled cobblestones at riot police on Tuesday.

From Belarus to South Africa, hundreds of thousands of workers took to the streets on May Day. In the U.S., tens of thousands of people participated in a general strike focusing on immigrants’ rights.

Thousands of people across the country, from low-wage workers to business owners, are on strike in order to show the U.S. how much it needs immigrants. Meet the people who helped organize the nationwide May Day strike and those taking part in it.