Freedom Riders impact.

Freedom Riders were "civil rights activists who rode interstate buses into the segregated southern United States".

Explanation:

The gatherings of white and African American political activists who took part in Liberty Rides, road trips through the American South in 1961 in response against segregated bus terminals were called as "Freedom Riders".

The groups were challenged as they got arrested by police officers along their routes, as well as extreme violence from white protesters, but also drawing worldwide support for their cause.

During what was regarded as the time of 'cooling off' the riders were given more security. They were sent to state jail at the end of the story, which earned a lot of publicity, particularly on incidents caused by them, which certainly emphasized their argument and objectives so they were accomplished.