Iranian-backed Shi'ite factions have exhorted Iraqis to turn out for a "million-strong" march on Friday aimed at whipping up anti-American sentiment as the United States' struggle with Iran plays out on the streets of Baghdad. It is likely to end up at the gates of the U.S. Embassy, the seat of U.S. power in Iraq and the scene of violent clashes last month when militia supporters tried to storm the compound. The U.S. killing of Iranian military mastermind General Qassem Soleimani in Baghdad this month has given renewed impetus to Iran's allies in Iraq.