John holding up the sign
I have a hard time believing that that group of black hoodlums several yards in the background, can't see a white man of all people standing there as plain as day, holding a big sign that says 'I hate *beep* And then weirdly when Zeus is stood there talking to him, most likely obscuring the sign, that's when one of the hoodlums spots it?
I really like this movie, and that moment, but that almost feels like a goof.