http://youtu.be/YiYnESmz1Mc
Muhammad was a slave owner and slave trader, even today after centuries slavery continues in North African countries by Arab Muslims against black Muslims and traditionalists.
Slavery in modern day Mauritania
Black African slaves still treated badly in Mauritana by Arab Muslim. Thousands of Haratine are still reduced to slavery in spite of legislation theoretically banning the practice.
80% of Mauritanians people are white arabo-berberes = hassani
20% are African black "wolof & foulan tribs"
Black slaves still fighting for rights in Arab Muslim country.
Arab Muslims still have slaves (Bilal) Bilâl ibn Rabâh