I have never booed anyone on the field....except blatant umpiring errors
, and will not start now. My boys and I applaud our players when they perform well and never 'can' them when they dont - for anyone that has played it isn't an easy game at any level, so imagine it at the AFL standard. As for Hird, he has the 'sword of Demacles' over his head and it is only a matter of time before it falls. It is a weak/immature person who 'kicks a man when he is down'.......... no matter who he is.
Also, he has a family to consider.
If on the other hand he wasn't being hunted then I would agree to showing your displeasure...but that isn't the case.