So it's crucial to bolster the men and women of courage in politics: the ones who can act as ambassadors between these increasingly dug-in parties and who can kindle that small flame of trust that has almost gone out.
McLeish went on to criticise the stewards at the Emirates Stadium after he was involved in altercation with an Arsenal fan behind the dug-out in the first half.
Houllier's long-awaited return to Anfield was even more emotional, taking his seat in the dug-out for the first time since his illness in the Champions League qualifier against AS Roma last month.