In my understanding, the moral responsibility lies with the religious leaders who had corrupted the real faith and were more concerned with their own position of power than with God's will.
It's a recurring theme. The old authorities, often even those who spoke in the name of religion, persecuted and attempted to kill every messenger of God the moment he came. While simple people, without much education and knowledge, recognized God's word and followed the prophets. No priest was among Jesus' disciples, as far as I know, but a simple fisherman was.
When Noah warned his people of the flood, they ridiculed him. Moses was searched for murder after he had manslaughtered a guy who fought with a fellow Hebrew, and Pharao did his best to silence Moses.
When Jesus came, the religious authorities, well studied people, all condemned Jesus, because he contradicted their dogma and threatened their worldly power.
When Mohammed came, the same happened among Jews and Christians in his region: The religious authorities denied his authority and at times joined the polytheist barbarians to fight him.
And when the Bab and Baha'u'llah appeared in 19th century Persia, the Muslims clerics did exactly the same, murdered the Bab along with 20.000 of his followers and imprisoned Baha'u'llah for the rest of his life in an exile city -- with the exact same arguments and reasons the Phariseans brought up against Jesus almost 2000 years before.
If you ever happen to witness the coming of new prophet of God -- don't ask the clerics for answers.