For seven years North Korean artist Song Byeok painted propaganda posters glorifying the world's most secretive regime. Today, having defected to South Korea, he uses his talents to satirize his repressive homeland.
Growing up, Song says he revered North Korean founder Kim Il Sung as a god, and was "100 percent" loyal to his son and successor, Kim Jong Il.
"I really believed we were the happiest people (in the world) because we had been brainwashed since childhood," he said in London where he is showing his paintings.