TEHRAN, April 30 (Xinhua) -- Tens of thousands of Iranians took to the streets on Wednesday in mass rallies across the country to pledge allegiance to Supreme Leader Mojtaba Khamenei and demonstrate national unity.

In the capital Tehran, people marched from Imam Hossein Square to Azadi Square, waving Iranian flags and holding pictures of the late Supreme Leader Ali Khamenei and the new leader.

A pavilion was set up along the route to commemorate those killed in a U.S. and Israeli attack on a school in the southern Iranian city of Minab on the first day of the 40-day war against Iran.