Traditional admission requirements were originally created as an intentional way to prevent blacks and other minorities from being admitted to historically white institutions.

Objectors said the clause could enable white residents to prevent blacks moving in.

About 100 cities and towns have removed racial restrictions that prevented blacks from doing business in central business districts.

These changes effectively prevented most blacks and many poor whites from voting.

Another tactic that prevented blacks from voting was the poll tax.

At the start, in 1957, the job was created to remove barriers that prevented individual blacks in the South from voting.

The attempt to prevent blacks from voting has been a staple of America's political history, like long-winded speeches and balloons.

It was about the local custom that prevented blacks from using the dressing rooms and trying on clothing in department stores.

Their presence, he argued at the forum, prevents blacks from establishing an economic foothold.

Critics have likened the laws to the poll taxes and tests used to prevent blacks from voting during the civil rights era.