AP PHOTOS: Workers of the world, uniting on May Day 2019

AP PHOTOS: A visual tour through the world's May Day protests of 2019

PARIS -- Recognizing the contributions and struggles of laborers on May 1 has roots in late 19th-century Chicago, but there was a timeless quality to some International Workers' Day observances held around the world Wednesday.

The labor unions behind the first May Day considered an 8-hour work day a cause worth striking for during the second industrial revolution. In 2019, the focus in several Asian countries was fair working conditions.

Workers marched through Hong Kong to demand a maximum work week of 44 hours, in Jakarta for a higher minimum wage and in Taiwan for more time off. Marchers demanded maternity leave and protections against workplace sexual abuse in Dhaka, the capital of Bangladesh.

Socialist parties picked May 1, 1889, as labor day to commemorate a Chicago rally three years earlier that brought a police crackdown, a mysterious bomb, at least 11 deaths and the subsequent executions of the rally's anarchist organizers.

On Wednesday in France, clusters of people wearing the black hoods and masks of modern-day anarchists pelted riot police with rocks and set trash cans on fire while darting in and out of a May Day march in Paris. France deployed 7,400 officers to protect the capital and other protesters from the violence.

Protesters and police officers also clashed in Turin, Italy; Istanbul and St. Petersburg, Russia.

And like the trade unionists of old who championed the rights of working classes off the job, activists in Europe, Africa and Asia this year promoted political platforms, opposed construction projects and looked ahead to the next elections.

Pope Francis offered a May Day prayer for people experiencing the "global tragedy" of unemployment.