Two protesters were arrested , according to CNN affiliate WPVI . NEW : Oakland City Hall reopens . The city of Oakland, which was under a state of emergency for nearly two weeks after the riots that rocked the city, has reopened its doors to residents and businesses. Protesters vow to stand their ground at Occupy DC camp . Mass arrests in Oakland among largest in city history , police say . Arrests are reported in New York , Philadelphia and Tampa .
NEW : Oakland City Hall reopens . The city of Oakland, which was under a state of emergency for nearly two weeks after the riots that rocked the city, has reopened its doors to residents and businesses. Protesters vow to stand their ground at Occupy DC camp . Mass arrests in Oakland among largest in city history , police say . Arrests are reported in New York , Philadelphia and Tampa .