Photos: Kids in 123 countries went on strike to protect the climate

An estimated 1.4 million young people in 123 countries skipped school Friday to demand stronger climate policies in what may be one of the largest environmental protests in history.

“This movement had to happen, we didn’t have a choice,” wrote the Swedish activist and strike leader Greta Thunberg with other young climate activists in the Guardian Friday. “We knew there was a climate crisis … We knew, because everything we read and watched screamed out to us that something was very wrong.”