Slavery is a crime against humanity though it is not considered genocide. There are examples of forced labor being used to execute Jews during the holocaust by the Extermination through labour policy of Nazi Germany but in general slavery is not considered genocide. However, there are slave labor systems which have killed millions of people due to inhumane treatment and war was waged in order to capture people so they could be enslaved, two particularly infamous examples being the Atlantic and the Arabian slave trades which some refer to as the Maafa or the Black Holocaust.