What was william wilberforce fighting for?

William Wilberforce was an English politician who became the voice of the abolition movement in Parliament. He was a slightly built man, about five foot three in height, and suffered from bouts of bad health. He was born in Hull, into a rich merchant family. As a child, whilst living with his uncle in London, he was taken to hear John Newton preach. It made a great impression on him but he returned home and soon became part of fashionable society, attending the theatre and races, where he watched his own horse run.

it's no easy i swear it's hard

whats the video? can u send a link?