In response to a cowardly attack on Muslim officers and their families as they prayed Friday prayers on 4 December 2009 in the army city of Rawalpindi, Hizb- ut- Tahrir, Wilayah Pakistan held protests in Islamabad, Lahore and Karachi. Protestors held banners showing that Obama's new policy is a policy of bombings and target killings, with the willing collaboration of Zardari's government. Protestors condemned Zardari's government which has opened Pakistan to the instigators of flag attacks, bombings and assassinations in Iraq and Afghanistan, the US intelligence and US private military organizations, such as DynCorp and Xe Services LLC, formerly known as Blackwater. They called for the Khilafah "Caliphate" which will unify the Muslims as a single force against the American crusaders.