Sandy Huffaker/Getty Images

Demonstrators from around the world took to their cities' streets on Friday, May 1, in honor of International Workers' Day. The protests gave voice to a variety of issues, ranging from working conditions to police brutality. Here are some of the most striking photos from those protests in New York, Istanbul, Hamburg, Manila, and more.

Chicago

A demonstrator holds a sign that reads: "Black Lives Matter." Credit: Scott Olson/Getty Images
Another's sign reads: "Stop Police Brutality." Credit: Scott Olson/Getty Images

Hamburg

Demonstrators took to the streets of the German city. Credit: Joern Pollex/Getty Images
And so did the riot police. Credit: Joern Pollex/Getty Images
Confrontations occurred between the two groups. Credit: Joern Pollex/Getty Images

Istanbul

May Day demonstrators marched in Istanbul's Besiktas neighborhood. Tensions ran high as protesters were barred from Taksim Square, an historic rallying ground for left-wing activists. Credit: Burak Kara/Getty Images
Turkish riot police blocked protesters from entering certain streets and neighborhoods. Credit: Burak Kara/Getty Images
The scene immediately after Turkish riot police used a water cannon on the crowd of demonstrators. They also used tear gas. Credti: Burak Kara/Getty Images
This protester is being detained by plain-clothes police officers. Credit: Burak Kara/Getty Images

London

Hundreds of British protesters gathered in Trafalgar Square to attend London's annual May Day Rally. Credit: Dan Kitwood/Getty Images

Los Angeles

Protesters march on downtown Los Angeles. Credit: Sandy Huffaker/Getty Images
Many called on Washington to reform immigration, raise the minimum wage, and put a stop to police brutality in solidarity with the Freddie Gray protesters in Baltimore. Credit: Sandy Huffaker/Getty Images

Manila

Filipino workers and unions marched in favor of better wages, a stop to contractualization, and improved labor conditions. In the photo, a group of protesters burn an effigy of president Benign Aquino. Credit: Dondi Tawatao/Getty Images

New York City

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