Bob Marley

"He had this idea. It was kind of a virologist idea. He believed that you
could cure racism and hate... literally cure it, by injecting music and love
into people's lives.
"When he was scheduled to perform at a peace rally, a gunman
came to his house and shot him down.
"Two days later he walked out on that stage
and sang.
When they asked him why - He said, 'The people, who were trying to
make this world worse... are not taking a day off. How can I?
Light up the darkness.'"

[I Am Legend]