| Comment | Historically anyway it was Celtic - Irish Catholic and Rangers - Scottish/British Protestant.
Nowadays, it is more diluted, but still easily the biggest derby in British football.
Here are three documentaries that give you an idea of the derby.
[1](https://m.youtube.com/watch?v=19j95pGNzI8)
[2](https://m.youtube.com/watch?v=cvkfJM6DrCQ)
[3](https://m.youtube.com/watch?v=cggTbCcbcNA) |
|---|