Federal officers clad in tactical gear deployed smoke, tear gas, flash grenades and other projectiles as the restive crowd of demonstrators hurled water bottles and fireworks.

Tense demonstrations outside the U.S. Immigration and Customs Enforcement building in Portland were declared a riot Saturday as federal officers once again faced off with protesters.

Two men made court appearances in federal court on Monday accused of assaulting federal officers during a protest outside the Immigration and Customs Enforcement office in South Portland on Saturday,