 While Democrat "Boss" Tweed, Tammany Hall leaders and Hall were Anglo, their power base rested largely upon Irish immigrants.This conflict boiled over in 1871 when Hall attempted to stop the Irish Orange Order (Irish of Anglo-Saxon and Scots-Irish descent) from holding a parade, perhaps provocatively celebrating the historic Orangemen (Anglo Protestant Irish) victory over ethnic Irish Catholics.Fearing that either banning the march or allowing it to continue would both lead to violence and mayhem, Governor John Hoffman overruled Mayor Hall and allowed it to continue with increased policing.