by Sheri UrbanReal FeministFresh off their portrayal of white, middle class Americans as the most likely terrorists, Barack Obama's Department of Homeland Security (DHS) has outdone itself in a ridiculous ad to run on TV this month. The PSA, shows a well-dressed attractive white woman exiting a taxi before walking into a train station. The taxi driver – a white man (what else?) – then makes a phone call and sets a timer on a device in the trunk of the car. The woman then leaves her designer handbag in the station, presumably with a bomb inside (I assume...