The Marines will deal with this situation accordingly. Remember that the Marines were the troops traditionally sent to occupy foreign countries, because they are especially suited for such as task.
Many of these Marines have been schooled in Arabic, the majority have attended training in Iraqi culture and basic Arabic, as well as guerrilla tactics in Iraq.
My prediction is that the Marines will enter Fallujah at the appropriate time, and they will get rid of the thugs. They know that these Saddam lovers only understand fear and humiliation, and the Marines know how to get under their skin using psyops tailored to the Iraqi culture.