The Dunning School was a historiographical school of thought regarding the Reconstruction period of American history (1865–1877), supporting conservative elements against the Radical Republicans who introduced civil rights in the South. It was named for Columbia University professor William Archibald Dunning, who taught many of its followers. The Dunning School viewpoint favored conservative elements in the South (the Redeemers, plantation owners and former Confederates) and disparaged Radical Republicans who favored civil rights for former slaves. The views of the Dunning School dominated scholarly and popular depictions of the era from about 1900 to the 1930s. Adam Fairclough, a British historian whose expertise includes Reconstruction, summarized the Dunningite themes: All agreed that black suffrage had been a political blunder and that the Republican state governments in the South that rested upon black votes had been corrupt, extravagant, unrepresentative, and oppressive. The sympathies of the "Dunningite" historians lay with the white Southerners who resisted Congressional Reconstruction: whites who, organizing under the banner of the Conservative or Democratic Party, used legal opposition and extralegal violence to oust the Republicans from state power. Although "Dunningite" historians did not necessarily endorse those extralegal methods, they did tend to palliate them. From start to finish, they argued, Congressional Reconstruction—often dubbed "Radical Reconstruction"—lacked political wisdom and legitimacy. Historian Eric Foner, a leading specialist, said: The traditional or Dunning School of Reconstruction was not just an interpretation of history. It was part of the edifice of the Jim Crow System. It was an explanation for and justification of taking the right to vote away from black people on the grounds that they completely abused it during Reconstruction. It was a justification for the white South resisting outside efforts in changing race relations because of the worry of having another Reconstruction.