What demonstrates that the voting rights act of 1965 was successful?

The Voting Rights Act prohibits discrimination on the basis of race or language minority status (i.e., Asian Americans, Native Americans, Alaskan Natives, and Spanish-speakers). Section 2 of the Act applies across the country and bars the use of voting practices or procedures that discriminate against members of such protected classes. For example, Section 2 has been used successfully to attack restrictive voter registration requirements and the locations of polling places at sites inaccessible to minority voters.

a.) are both appointed for life