Hundreds of buildings commissioned by the Works Progress Administration and Roosevelt’s other “alphabet” agencies are being demolished or threatened with destruction, mourned or fought over by small groups of citizens in a new national movement to save the architecture of the New Deal. In July, at the Santa Fe Indian School in New Mexico, a dozen buildings built in the Spanish Revival style in the 1930s, including murals with Native American themes, were bulldozed. In Chicago, architectural historians have joined with residents of Lathrop Homes — riverfront rows of historic brick public housing — to try to persuade the Chicago Housing Authority not to raze the complex. In Cotton County, Okla., a ruined gymnasium has only holes where windows used to be. Across the country, schools, auditoriums and community centers of the era are headed for the wrecking ball.