"Slavery in Mali exists today, with as many as 200,000 people held in direct servitude to a master. Since 2006, a movement called Temedt has been active in Mali struggling against the persistence of slavery and the discrimination associated with ex-slaves. There were reports that in the Tuareg Rebellion of 2012, ex-slaves were recaptured by their former masters."
Source: https://en.wikipedia.org/wiki/Slavery_in_Mali
And to go even more controversial : they are (today) large movements in islam that see restoration of slavery as a goal [1]. Some, famously ISIS, do it in practice too (they buy and sell humans, and are proud of it, because apparently, so did the prophet. Why leftists are advocating tolerance/justice towards a pro-slavery group in America is beyond me ...). But in many parts of Africa and the middle east there are current islamic governments supporting slavery, essentially all of the ones on the northern border of the Sahara in Africa and in the middle east, all the religious ones [2]. I read a UN report that essentially said that because of islam, slavery is spreading, today.
[1] https://en.wikipedia.org/wiki/Islamic_views_on_slavery [2] http://www.thedailybeast.com/articles/2015/10/11/inside-the-... or worse https://en.wikipedia.org/wiki/Issa_bin_Zayed_Al_Nahyan