"I was crying," says Alya, when she saw news of last week's Munich attack that left a toddler and her mother dead. "Why should someone do something like that? Why? I can't understand it." An Afghan man's in custody after what was the latest in a series of attacks in German cities where the suspect has been an asylum seeker. Last Thursday it was a mother and daughter in Munich; last month another child and an adult were killed in Aschaffenburg. Alya came here a decade ago from Syria with her baby son. Now 10, he and his mother welcome...