Celebrities are voicing concerns about the welfare of scores of migrants seeking haven in Europe after fleeing north from North Africa and the Middle East. J.K. Rowling is Tweeting on her own as well as retweeting users calling British Prime Minister David Cameron’s stance on refugees ‘utterly shameful’ and linked to a petition for the United Kingdom to accept more asylum seekers. If you can't imagine yourself in one of those boats, you have something missing.