Read Maria’s excellent piece here:

In human history, when a group of people is considered dangerous (the Jews in Nazi Germany) or private property (African slaves in the U.S. before the Civil War), they are de-humanized as a first step to rationalize their extermination. Today, pre-born children diagnosed with Down syndrome in the womb are routinely aborted, usually because the parents and doctors do not think their lives are worth the effort of their care. Children in general seem to be viewed more and more as commodities in a consumer culture, to be chosen or rejected based on desirability.