A protester dressed as a clown holds an umbrella over a Swiss police officer on a motorbike during a May Day demonstration in Zurich, Switzerland on May 1, 2017. (Photo by Arnd Wiegmann/Reuters)

A reveller walks through the streets in the early hours during traditional May Day celebrations in Oxford, Britain, May 1, 2015. (Photo by Dylan Martinez/Reuters)

Nazi dictator Adolf Hitler greets supporters at a May Day gathering in the Olympic Stadium, Berlin. (Photo by Keystone). 1st May 1938

Students from the University of St Andrews jump into The North Sea, as a good luck tradition before exams start on the East Sands in St Andrews, Fife, Scotland on May 1, 2018. (Photo by Derek Allan/Alamy Live News)

Revellers on the famous Otley Run in Leeds, United Kingdom enjoying the booze fuel pub crawl in time for May Bank Holiday weekend on April 30, 2021. (Photo by Nb press ltd)

A Russian Su-35S combat aircraft and a Tu-95ms strategic bomber fly in formation above a church during a rehearsal for the flypast, which is part of a military parade marking the anniversary of the victory over Nazi Germany in World War Two, in Moscow, Russia on May 4, 2022. (Photo by Maxim Shemetov/Reuters)

Russian police cadets march during general rehearsal of the Victory Day parade on the Dvortsovaya Square in St. Petersburg, Russia, 07 May 2021. The military parade marking the 76th anniversary of the victory over Nazi Germany in the World War II will take place on the Dvortsovaya Square on 09 May 2021. (Photo by Anatoly Maltsev/EPA/EFE)

An Israeli police officer holds his weapon as he stands in front of an injured Israeli driver moments after witnesses said his car crashed into a Palestinian on a pavement during stone-throwing clashes near Lion's Gate just outside Jerusalem's Old City on May 10, 2021. (Photo by Ilan Rosenberg/Reuters)