To commemorate the 11th anniversary of World Down Syndrome Day, Wyn Evans, a column writer for Cardiff Times, and loving father to his Down Syndrome daughter , shared a moving status on his facebook page yesterday: ‘I’ve often wondered what I would say or do if someone dissed Angharad or her Down Syndrome in front of her and me. I hope I would respond politely but informatively. I hope I would respond at all. I’m lucky, cos I have the…