Note that slavery occurred throughout the world, in all continents and affecting all people groups (“races”). But atheists attack only the Bible and the Christian west for a humanity-wide evil, whereas it was only the Christianized west that finally abolished this evil and spread this abolition throughout the world.
Cosner, L. (2010). Hoax ‘testimony’ and Hoax endorsement: Is eating shellfish still an abomination? Creation Ministries International. Available http://creation.com/hoax-testimony-hoax-endorsement. Last accessed 26th Jul 2014.