HANAU, Germany – Gokhan Gultekin’s juggling act was in many ways typical of Hanau’s Turkish community: taking care of frail parents, hustling to work at a late-night cafe, making some cash on the side at a second job and attending Friday prayers at the mosque across town. On Friday, Gultekin’s friends mourned him at his house of worship, two days after “Gogo” was killed in a racially motivated shooting rampage that shook Germany and prompted fresh calls for a crackdown on far-right extremism and anti-immigrant scapegoating. “We grew up in here in these streets, ran through the playgrounds, laughed together,” said Omer Demir, who described his recently engaged, 37-year-old friend as hard-working.