The CDC reports that about one out of every 700 babies is born with Down's Syndrome (in the USA). It's a condition caused by extra genetic material in a developing baby's chromosomes which causes some changes in the child's development, causing both physical changes and mild to moderate mental impairment.
This awesome video shows what people with Down's Syndrome really think about how others treat them. They debunk several myths or assumptions people commonly make about them, and they do it well. The video, published by BBC Three has hit almost nine million views on Facebook.