Also, muslims approved of continuing slavery in the recent past as it would put the slave in close association with islam, which was considered a blessing for the person enslaved.  How much press did that gem get?  I found a CNN reference to isis.  I was looking for a reference and stumbled upon a page which explains the philosophical background of the attacks noted recently in Germany.  The article doesn’t mention it, but the association with training leading to behavior is clear.

Just some thoughts: Realize that slavery was banned from this country for moral reasons when it was still a viable institution.  This country was the second in the world to ban slavery.  islam still promotes that institution.