club/league marks

[CapnBloodbeard]

No one is saying not to discipline them. What I am saying is that dissent leads from a perceived injustice. If you're finding that you keep booking the 6 foot 4 tall CB, with a general theme that you're punishing them for challenging the 5 ft 7 CF and they're getting wound up that maybe you should look at how you deal with that battle.

It's not about managing dissent it's about stopping it from happening by improving performance

That goes back to blaming the referee. The perceived injustice typically comes because the player is biased (anything against their team is a bad call) to the point where it completely corrupts their perception of what happened (you've seen how much abuse can arise from a decision that nobody could possibly argue is incorrect), because they don't know the laws, or don't understand the refereeing of them (how things look different from different angles, things like that 'no, you can't tell it's offside from all the way back there. You incorrectly think it's offside because you're all the way back there'.

Dissent comes purely because as a sport, football tolerates, even condones - even encourages abuse. That's the only reason. Players disagree with officials in all sorts of sports but you only see the behaviour we see in one sport.
And THAT is the single root cause of all dissent/abuse in this game.