Overall, African Americans in Northern and Western cities experienced systemic discrimination in a plethora of aspects of life. Within employment, economic opportunities for blacks were routed to the lowest-status and restrictive in potential mobility. Within the housing market, stronger discriminatory measures were used in correlation to the influx, resulting in a mix of "targeted violence, restrictive covenants, redlining and racial steering". The Great Migration resulted in many African Americans becoming urbanized, and they began to realign from the Republican to the Democratic Party, especially because of opportunities under the New Deal of the Franklin D. Roosevelt administration during the Great Depression in the 1930s. Substantially under pressure from African-American supporters who began the March on Washington Movement, President Franklin D. Roosevelt issued the first federal order banning discrimination and created the Fair Employment Practice Committee. Black veterans of the military after both World Wars pressed for full civil rights and often led activist movements. In 1948, President Harry Truman issued Executive Order 9981, which eventually led to the end of segregation in the armed services. Housing segregation was a nationwide problem, widespread outside the South. Although the federal government had become increasingly involved in mortgage lending and development in the 1930s and 1940s, it did not reject the use of race-restrictive covenants until 1950, in part because of provisions by the Solid South Democrats in Congress. Suburbanization became connected with white flight by this time, because whites were better established economically to move to newer housing. The situation was perpetuated by real estate agents' continuing racial discrimination. In particular, from the 1930s to the 1960s, the National Association of Real Estate Boards (NAREB) issued guidelines that specified that a realtor "should never be instrumental in introducing to a neighborhood a character or property or occupancy, members of any race or nationality, or any individual whose presence will be clearly detrimental to property values in a neighborhood." The result was the development of all-black ghettos in the North and West, where much housing was older, as well as South. Invigorated by the victory of "Brown" and frustrated by the lack of immediate practical effect, private citizens increasingly rejected gradualist, legalistic approaches as the primary tool to bring about desegregation. They were faced with "massive resistance" in the South by proponents of racial segregation and voter suppression. In defiance, African-American activists adopted a combined strategy of direct action, nonviolence, nonviolent resistance, and many events described as civil disobedience, giving rise to the civil rights movement of 1954 to 1968.