By Yasmine Saleh and Yara Bayoumy CAIRO (Reuters) - Ousted Egyptian leader Mohamed Mursi struck a defiant tone on the first day of his trial on Monday, chanting 'Down with military rule', and calling himself the country's only 'legitimate' president. Mursi, an Islamist who was toppled by the army in July after mass protests against him, appeared angry and interrupted the session repeatedly, prompting a judge eventually to adjourn the trial, which barely got underway, to January 8. Opponents of Egypt's army-backed government say the trial is part of a campaign to crush Mursi's Muslim Brotherhood movement and revive a police state reminiscent of Hosni Mubarak's three- decades of autocratic rule that ended in a 2011 popular revolt. Mursi, 62, who spent time in Mubarak's jails before becoming Egypt's first freely elected president after the country's "Arab Spring" revolution, found himself behind bars again this year facing charges of inciting violence that could carry the death penalty.