You Reach A Point Where You've Just Got To Give Up On Some People.

https://news.sky.com/story/amsterdam-police-break-up-pro-palestinian-protest-after-antisemitic-violence-following-football-game-13252043

Particularly when not only have you told them the right way to do it. You've even gone to the trouble of doing so in song.

https://www.youtube.com/watch?v=JF70kuJpy0w&pp (Grand Coulee Dam, Lonnie Donegan, Pye, Official Audio).