Bill Gates is a good example of the former. So many people hated him because he was the head of the evil, greedy Microsoft corporation, but the guy has done a lot of good since leaving the company. He is one of the most impactful philanthropists today. He has donated millions of computers to the public school system. Him and his wife are involved in a lot of different charities. He has even pledged to donate 90% of his fortune to charities.
"If a man with no arms and a man with no legs started learning karate, the same light bulb would appear over every head in Japan. That’s right: Glue them together and see if it can kill a panda."