I cant believe people here are standing up for this passenger.
He doesn't need an explanation of what the problem is in order to follow instructions.
I think most of us could put our individual sense of entitlement aside before the AFP would need to be called.
Clearly he didn't know when to pull his head in when the AFP arrived either and he got the zap.
If he disagreed or wanted further explanation he could have written a letter of complaint afterwards.
If you dont think he deserved a taser then take it up with the AFP.
The moment you start negotiating with the person who won't comply is the moment you've lost authority.