Nelson Mandela was a freedom fighter. He was also a lawyer. He and Oliver Tambo opened the first black law firm in South Africa in 1952. Though trained in the system, he fought it. He became the first President of post-apartheid South Africa.
Mahatma Gandhi is a timeless name easily recognisable anywhere in the world. He was a freedom fighter. Before that, he was trained as a lawyer in Britain. He started his non-violent civil disobedience campaigns in South Africa before leaving to become a leading light in the independence movement in India.