
The 2013 May Day protests were a series of international protests involving hundreds of thousands of people that took place worldwide on May Day over the ongoing global economic crisis including austerity measures and poor working conditions.

The 2017 May Day protests were a series of protests that took place on May Day over worker and immigrant rights, throughout the United States and around the world. Protests became violent in Olympia, Washington, and Portland, Oregon. Many demonstrators were protesting against the policies of President Donald Trump, specifically those related to immigration.

The Benalla affair or Benalla affairs are political and judicial cases involving Alexandre Benalla, who served as a security officer and deputy chief of staff to French President Emmanuel Macron.

International Workers' Day, also known as Labour Day in most countries and often referred to as May Day, is a celebration of labourers and the working classes that is promoted by the international labour movement and occurs every year on May Day.

May Day in Kreuzberg refers to the street festivals and demonstrations organized by left-wing and far-left groups on May 1, International Workers' Day, in the Berlin district of Kreuzberg. Specifically, the term may refer to the May 1, 1987, when particularly severe rioting in Kreuzberg led to the Berlin police having to completely withdraw from the eastern area of Kreuzberg, SO 36, for several hours. Since then, autonomists and anti-fascist groups have held so-called "Revolutionary 1st of May Demonstrations" almost every year.

In the context of the late Russian Empire, a mayovka was a picnic in the countryside or in a park in the early days of May. Eventually, "mayovka" came to mean an illegal celebration of May 1 by revolutionary dissidents, typically presented as an innocent picnic. After the revolution, this proletarian mayovka merged into Labour Day.

The Portella della Ginestra massacre was one of the most violent acts in the history of modern Italian politics, when 11 people were killed and 27 wounded during May Day celebrations in Sicily on May 1, 1947, in the municipality of Piana degli Albanesi. Those held responsible were the bandit and separatist leader Salvatore Giuliano and his gang – although their motives and intentions are still a matter of controversy.