How does grdere explain the fact that one of the black slaves was forced to drink rum in the slave dancer?

"Grdere" was likely a typo for "Gérard" in reference to the film "The Black Stallion," where one of the black slaves was forced to drink rum by the slave trader to be compliant during the slave dance. This act was portrayed as a form of coercion and dehumanization to show the cruelty and power dynamics present in the slave trade.