Chairman of the Germany's Social Democratic Party (SPD) and Vice-Chancellor Lars Klingbeil delivers a speech during a May Day rally with the motto "together for good work" of trade union IGBCE (IG Mining, Chemistry, Energy) in Bergkamen, on May 1, 2026. (Photo by INA FASSBENDER / AFP via Getty Images)

Demonstrators hold a banner reading "Long live May 1" during a May Day rally marking International Workers' Day in the Besiktas district of Istanbul, on May 1, 2026. (Photo by Yasin AKGUL / AFP via Getty Images)

Chairman of the Germany's Social Democratic Party (SPD) and Vice-Chancellor Lars Klingbeil delivers a speech during a May Day rally with the motto "together for good work" of trade union IGBCE (IG Mining, Chemistry, Energy) in Bergkamen, on May 1, 2026. (Photo by INA FASSBENDER / AFP via Getty Images)

Chairman of the Germany's Social Democratic Party (SPD) and Vice-Chancellor Lars Klingbeil delivers a speech during a May Day rally with the motto "together for good work" of trade union IGBCE (IG Mining, Chemistry, Energy) in Bergkamen, on May 1, 2026. (Photo by INA FASSBENDER / AFP via Getty Images)

Demonstrators shout slogans during a May Day rally marking International Workers' Day in the Besiktas district of Istanbul, on May 1, 2026. (Photo by Yasin AKGUL / AFP via Getty Images)

Chairman of the Germany's Social Democratic Party (SPD) and Vice-Chancellor Lars Klingbeil delivers a speech during a May Day rally with the motto "together for good work" of trade union IGBCE (IG Mining, Chemistry, Energy) in Bergkamen, on May 1, 2026. (Photo by INA FASSBENDER / AFP via Getty Images)

Chairman of the Germany's Social Democratic Party (SPD) and Vice-Chancellor Lars Klingbeil delivers a speech in front of miners (R) during a May Day rally with the motto "together for good work" of trade union IGBCE (IG Mining, Chemistry, Energy) in Bergkamen, on May 1, 2026. (Photo by INA FASSBENDER / AFP via Getty Images)

Chairman of the Germany's Social Democratic Party (SPD) and Vice-Chancellor Lars Klingbeil delivers a speech during a May Day rally with the motto "together for good work" of trade union IGBCE (IG Mining, Chemistry, Energy) in Bergkamen, on May 1, 2026. (Photo by INA FASSBENDER / AFP via Getty Images)