Well, there has been a huge amount of progress made by racial minorities during this time.
In 1950, segregation in schools was legal. So was segregation in public places run by the government and those (like stores and restaurants) that were run by private people. It was illegal in many states for whites and nonwhites to marry.
Since then, all of this has changed. Brown v. Board of Education made school segregation illegal. The 1964 Civil Rights Act made discrimination in public accomodations illegal. Loving v. Virginia struck down the laws against interracial marriage.