If he didn't do anything illegal he didn't do anything illegal. You can go up to whoever the fuck you want and ask them any question you want as long as you don't put hands on them. That's really what it boils down to. There's really no argument.
That's not true, people get arrested all the time over here for yelling at their wife or yelling at the footy or something or other minor verbal altercation with somebody else - it must be different in the states, but over here you cant say or do shit! They will lock you up for looking angrily at a police officer and just trump up some charges! Australian police don't take the same level of shit as the Americans it seems! Just simply threatening to hit some one is a serious assault over here , the systems a fucking joke, in fact, I just broke a law, the state I live in will fine you for swearing in public - can you fucking believe that - swearing is illegal, and western countries frown on Islamic fundamentalist countries with religious laws, yet look at western laws, all based on religious bullshit and in 2012 it is illegal to swear - Shits fucked up I fuckin swear!