Thousands of young people from across North America are in Toronto to take part in We Day, the largest youth empowerment event in the world.

The purpose of the annual event, an initiative of Free the Children, is to celebrate social activism by youth, create some momentum for change and inspire youth to make a difference in their communities.

The event, held at the Air Canada Centre, regularly attracts big name performers and speakers.

This year's We Day is being co-hosted by singer and actor Joe Jonas and actress Nina Dobrev.

A crowd of about 18,000 people will also hear from Free The Children co-founders Craig and Marc Kielburger, singer Nelly Furtado, actor Danny Glover and Mary Robinson, the UN former high commissioner for human rights.

Furtado provided one of the day's biggest surprises when she announced a $1 million donation to Free the Children.

The first We Day was held in 2007.

Watch CP24 for coverage throughout the day.