Here is a video on the late Dr. Jerome Lejeune who was the father of modern genetics and a Servant of God. He worked for a cure for children with Down Syndrome after having discovered the genetic abnormality that was its cause. He spent the later part of his life advocating for the dignity of children with Down syndrome and against the policies of aborting children with these genetic problems.
Hat tip Leticia Velasquez co-founder of K.I.D.S. (Keep Infants with Down Syndrome)