1. If anything"God" is anti-American with the secularism that is imposed in their constitution.
2/3. Since when did Americans mind treason? They betrayed the British and sought help from their enemies to do so, leading to their independence, it's a bit late to start bitching about loyalty.
Nope... Well, you SHOULDN'T!!! In this country you have a right to freedom of speech, the press, and expression. So, as long as you are not "inciting violence" or "giving death threats" you should be fine. They'll probably just ignore you though...
Shouldn't we be complaining to the media and everything? This is quite clearly offensive to us and even insults us in the title. As an Australian I can't complain to your media, but it would be wonderful if one of you guys did. The only way to defeat these people in the media is to play their game.
This is an unsound ethical argument. "Anti-god is anti-American" is an opinion rather than an actual fact, and since that is thus not necessarily true, the entire billboard falls apart. But isn't it passionate? I don't know about the rest of you, but name-calling and open hatred always makes me want to go a-running to join a church.