A key belief in Manichaeism is that there is no omnipotent good power. This claim addresses a theoretical part of the problem of evil by denying the infinite perfection of God and postulating the two equal and opposite powers mentioned previously. The human person is seen as a battleground for these powers: the good part is the soul (which is composed of light) and the bad part is the body (composed of dark earth). The soul defines the person and is incorruptible, but it is under the domination of a foreign power, which addressed the practical part of The Problem of Evil. Humans are said to be able to be saved from this power (matter) if they come to know who they are and identify themselves with their soul.
Manicheanism is a persian dualistic religion - not Christianity in any form. Ignorant authors and succulent readers should know better.
http://en.wikipedia.org/wiki/Manichaeism
Should all "heretics" be killed in the name of God?
There are approximately 4-5 billion non Christians on earth. Certainly a great many of these peoples beliefs and practices are dangerous to Christianity. Should we kill them all and let Gord sort it out?
I do find it interesting that you would use probably the most unreliable "Encyclopedic" resource on the internet as the source of your apparent self-professed knowledge.
IOW, what is your point?