The history of eliminationism in America, and elsewhere, shows that rhetoric plays a significant role in the travesties that follow. It creates permission for people to act out in ways they might not otherwise. It allows them to abrogate their own humanity by denying the humanity of people deemed undesirable or a cultural contaminant.
At every turn in American history -- from [Spanish theologian] Juan Gines de Sepulveda's characterization of the New World "barbarians" as "these pitiful men... in whom you will scarcely find any vestiges of humanness," to [Sand Creek Massacre commander] Colonel Chivington's admonition that "Nits make lice!," to the declarations that "white womanhood" stood imperiled by oversexed black rapists, to [California Senator] James Phelan's declaration that Japanese immigrants were like "rats in the granary" -- rhetoric has conditioned Americans to think of those different from themselves as less than human. Indeed, their elimination is not just acceptable, but devoutly to be wished and actively sought.
Which is why, when we hear eliminationist rhetoric today, we need to be on our guard. The ghosts of our history tell us as much.