The historical Muhammad was the savage leader of a gang of robbers from Medina. Without scruples they looted, raped and murdered. The sources describe orgies of savagery where hundreds of people's throats were cut, hands and feet chopped off, eyes cut out, entire tribes massacred. An example is the extinction of the jewish Kurayza tribe in Medina in 627. One of those who chopped off their heads was Muhammad. The women and children were sold as slaves. Confronted with the lunacy of Islamic terrorists today, it is not hard to find out where the lunacy comes from.
"Time To Unmask Muhammad", The Brussels Journal (30 March 2011)