So what? U.S. government free speech policies allow citizens to say most whatever they like, including things that cannot legally be said in Islamic theocracies. When a U.S. resident inevitably exercises his freedom of speech in a way that offends Muslims, would someone in Saudi Arabia therefore be justified in claiming that "the U.S. insults Islam"?

No, of course not.

Though from certain POV these devices exist despite government policies, as the phenomenon has certain anti-authority connotations:

http://en.wikipedia.org/wiki/Shanzhai