I just say the child (or adult) has Trisomy 21 and the person who made those comments are retarded.
I see your point however.
What these ‘people’ and I use that in only the biological sense, don’t realize is that we are already at the point where ‘old’ people are being urged to ‘die with dignity’. And people with other diseases are being urged to ‘die with dignity’. Soon, they will have a relative or perhaps they themselves will be urged to ‘die with dignity’ because we have already allowed liberals do define the value of life down so far that in 2014 it has very little value to someone in power somewhere in America already.
TLDR: They will be next in line and they are too stupid to know it.