Рассказ про фильм на английском, чтобы было сложно угадать

This film is extremely thrilling and startling. It tells about a man who was a complete loser, working as a clown or an animator, and had a mental disorder which was expressed by uncontrollable laughter. But during the movie he started getting angry at the world because it always was a dangerous and unfair place. And at the end of that film he finally losed his mind, dyed his hair green, dressed in a very bright costume, made a mess in the city and murdered a famous TV presenter. Then killer became became the image of the revolution and got into a nuthouse.