"We were walking through Neukölln, a former West Berlin neighborhood and longtime immigrant enclave... Today, people from more than 160 countries call Neukölln home, andjournalists and politicians take Uzun’s tours to better understand one of Berlin’s most diverse neighborhoods. This is where Uzun takes her tour groups. Here, she tells them how the Rixdorf quarter of Neukölln has actually been home to immigrants for centuries: In the 18th century, King Friedrich invited Bohemian Protestants to help settle the land here, even freeing them from taxes and exempting them from military service. “They were allowed to keep their language,” said Uzun, pointing out a street sign still in Czech. “It took them 140 years to really integrate.” Today, more than 40 percent of the neighborhood’s 325,000 residents have an immigrant background, which Germany defines as either being from a different country or having foreign parents or grandparents; about a quarter of the residents...