This is an archived article and the information in the article may be outdated. Please look at the time stamp on the story to see when it was last updated.

SEATTLE, Wash. — A May Day protest in downtown Seattle turned violent Wednesday night, with police saying they resorted to pepper spray to disperse demonstrators who pelted them with whatever was at hand.

Seattle Police said the crowd tossed rocks, bottles, metal pipes, fireworks — and even a skateboard.

It was not immediately known how many arrests were made.

The clashes came after a day of peaceful marches in the city, CNN affiliate KING reported.

Hundreds of thousands of people across the globe take to the streets on May 1 to demand better working conditions during what is known as International Workers’ Day.

This year, May Day demonstrations in Turkey turned violent pushing riot police to fire tear gas and water cannons at protesters.

At least 22 police officers were wounded from rocks and other objects and 72 people were detained, police said.