DescriptionWorkers and soldiers gathered in Palace Square in Petrograd (today's Saint Petersburg) for the first legal, open, and nationwide May Day celebration in Russian history, made possible by the February Revolution weeks earlier which had successfully overthrown the Romanov monarchy.
LicenseKarl Karlovitsh Bulla / Press Photo Archive JOKA, CC BY 4.0, via finna.fi
DescriptionFederal police officers organizing traffic to allow a few of the hundreds of delayed vehicles through a roadblock on the Mexico City-Pachuca highway in Ecatepec, Mexico, during a protest by officers revolting against plans to absorb them into the newly formed National Guard.
DescriptionDescendants of John A. Roebling and his son Washington Roebling posing for a family photo at the River Café in Brooklyn during a reunion celebration beneath the Brooklyn Bridge - designed by John and completed under Washington's supervision.