You're a closet Arsenal fan!It's still quite a big if for us to beat them, but if we did, then I think we should show a bit more class than to sing that to Wenger. Regardless of how things have gone for him in recent seasons, to be manager of a major club for more than 20 years warrants a little more respect. I don't think Hughton would think much of that either.
Some managers deserve a bit of stick (i.e. any Palace manager, Pardew, Allardyce, etc...) and they would be fair game for a teasing chant. I reckon it's better to pick your target appropriately.
Away from the game I'd agree that someone who's managed a team for that long deserves some respect, but they don't deserve that respect from our fans during the game. It's football FFS, chanting crap against the oppo is half the fun.
And this is Wenger we're talking about. Regardless of how long he's held on to power, he is a ****. In those 20 years he's never seen a challenge where his player was at fault.