Very disappointing that kinda behaviour on such a special day being hijacked by students.
Bayeux in France celebrated the 80th anniversary of the D-Day landings & the Battle of Normandy in 2024 with a variety of events & ceremonies throughout the year.
I had the pleasure meeting a female Aussie turbo-rock singer at a memorial Service in Bayeux, Normandy France who Mum does PR tour work for, she'd explained to me the Aussie terminology within her musical style being bogun, larrikin & ocker. So I found myself into understanding a new language of some "Aussie strine" words which would aptly describe the student behaviour in your link.
The singer was also developing her own political consciousness, turning to books by the likes of Malcolm Gladwell who writes some great stuff with his main argument being that success results from a complicated mix of factors which requires taking a closer look at why certain people & even entire groups of people thrive while others fail.
Gladwell's Tipping Point book helps making you see the world in a different way of that little-understood phenomenon, the "social trends epidemic".
Weird how folks minds can be pre-wired by genetics & heritable characteristics which often predetermine certain physiological & psychological factors, Spaldy.
As you cannot think about what you don't know (linguistically) so the ability to express ideas will be limited as would appear to be the case in your link for those demonstrating.
A valued lesson i learned into beating my own illness was how thoughts & their expression in language had a limit likened to the rules of any game - but the capacity to think & extend this thinking into speech or writing is beyond measure when you finally grasp the disciplined concept of re-wiring your brain & how to do it, as my brain certainly needed a re-wire job with it's constant interruption from a diagnosed issue & it would appear quite a few students to need to grasp such a concept, imo.