Frederick Douglass was a major one
Answer:
The Founders had been so concerned with making sure the central government couldn't become too powerful that they neglected to make it powerful enough to solve the issues facing a new nation.
Young people mostly African Americans some Whites energized the movement by joining together and staging many sit ins at restaurants library’s places that would refuse to serve African Americans, they even went on these rides on buses that went cross country they them freedom rides/freedom riders they did this to test the governments willingness to enforce the law and protect them unfortunately they were attacked. Hope this helped!