Yeah, I doubt very much most of the Muslim world finds the US flag offensive.

I'm sure they find the actions of "liberal" Obama far more offensive:
Killing hundreds of innocent civilians by drone strike, creating ISIS to rampage across the Middle East.

The last 4 years has shown that the majority of Muslim countries also don't need to be invaded for regime change to keep America safe. All that needed to happen was the DS needed to stop creating wars, dividing and conquering.

Iran may be different, but this is because the DS has also built Iran into what it is.