The Washington Post reports the people of Basra in southern Iraq torched the local Iranian consulate and the offices of several Shiite militias believed to be controlled by Iran. Sharing the Shia branch of Islam with Iran doesn't seem to make southern Iraqi Arabs necessarily love Persians.
It's worth remembering that Iraq fought a long and bloody war with Iran's Persians while Saddam was the Iraqi leader. Thinking of adages like "the enemy of my enemy is (at least temporarily) my friend," I'm inclined to view anti-Iran unrest in southern Iraq, or wherever it happens, as good news.
Unlike President Obama, I don't see Persians as significantly better folk than Arabs. Another adage comes to mind: "a pox on both their houses."