Tension creates atmosphere, it's really as simple as that.
Whether it be a derby, or a game with something on it.
The rest is just window dressing. A general malaise is consistent between both team and fans, dependent on opposition.
It has always been like this.
A confined incident, related to a sending-off, contentious moment, is the only break from the norm.
It is consistent across football. The tribalism has been sanitised.
Hence, why away followings are a totally different match-day experience, totally different across the board.
It is the British mentality, of fighting your ground (metaphorically), showing your numbers, turning up, and trying to outdo your foe.
You see it with the following England have to major tournaments, also.
In a nutshell, you can lead a horse to water....