Members of French band Green Line Marching Band parade during the 36th edition of the Les Eurockeennes de Belfort music festival, in Sermamagny, eastern France, on July 3, 2026. (Photo by ROMEO BOETZLE / AFP via Getty Images)

Members of French band Green Line Marching Band parade during the 36th edition of the Les Eurockeennes de Belfort music festival, in Sermamagny, eastern France, on July 3, 2026. (Photo by ROMEO BOETZLE / AFP via Getty Images)

Members of French band Green Line Marching Band parade during the 36th edition of the Les Eurockeennes de Belfort music festival, in Sermamagny, eastern France, on July 3, 2026. (Photo by ROMEO BOETZLE / AFP via Getty Images)

Members of French band Green Line Marching Band parade during the 36th edition of the Les Eurockeennes de Belfort music festival, in Sermamagny, eastern France, on July 3, 2026. (Photo by ROMEO BOETZLE / AFP via Getty Images)

A festivalgoer dances during the 36th edition of the Les Eurockeennes de Belfort music festival, in Sermamagny, eastern France, on July 3, 2026. (Photo by ROMEO BOETZLE / AFP via Getty Images)

A festivalgoer sprays fellow revellers with a water gun during the 36th edition of the Les Eurockeennes de Belfort music festival, in Sermamagny, eastern France, on July 3, 2026. (Photo by ROMEO BOETZLE / AFP via Getty Images)

A festivalgoer wearing a dog mask walks in front of giant 'Eurocks' letters during the 36th edition of the Les Eurockeennes de Belfort music festival, in Sermamagny, eastern France, on July 3, 2026. (Photo by ROMEO BOETZLE / AFP via Getty Images)

Festival-goers take selfie photographs in front of giant 'Eurocks' letters during the 36th edition of the Les Eurockeennes de Belfort music festival, in Sermamagny, eastern France, on July 3, 2026. (Photo by ROMEO BOETZLE / AFP via Getty Images)