Every man is responsible for their own actions, so is Mohammad, he must stand alone before G-D and answer for what he has done wrong. All men have sinned and come short of the glory of G-D therefore no man is perfect. Now about the religion, Islam like many others may need reform but that always come with opposition, there is always violence before a major change. I have read the true Koran, the one which pre-dates Mohammad, everyone should read it. We are all human and we are all brothers and sisters, hate never fixed anything.