DUBAI, United Arab Emirates (AP) — Protesters in Iran marched through the streets of multiple cities overnight in the most widespread demonstration in weeks amid the monthslong unrest that’s gripped the Islamic Republic, online videos purported to show Friday. But they also can turn into cyclical confrontations between an increasingly disillusioned public and security forces that turn to greater violence to suppress them, as they had in the chaos leading up to Iran’s 1979 revolution. Free as a Bird