Workers across the world are celebrating International Workers' Day today. On May 1, 1886, 300,000 American workers went on strike and demanded an 8-hour workday. To commemorate the day, Google created a doodle. Although the United States celebrates this holiday on September 1, many other countries celebrate today.
See "Google Doodle Tips Hat to the World's Workers on Labor Day", TIME, May 1, 2017