Protests outside Portland's ICE building continue, with police arresting two men Tuesday and investigating more incidents from the past week-and-a-half.

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.