Supporters in Germany of Fethullah Gulen, an Islamic preacher exiled in the United States and accused by Ankara of staging a coup in the country, are receiving death threats from supporters of Turkish President Recep Tayyip Erdogan.
"We are receiving messages of hate, and we take these threats very seriously. We do not think that this wave of aggression is coming to an end," Ercan Karakoyun, head of the pro-Gulen Dialogue and Education Foundation in Berlin, told dpa.
There are about 3 million people of Turkish heritage living in Germany, which has the world's biggest Turkish diaspora community. The older generation started coming to Germany in the 1960s as guest labourers.
The coup attempt has divided the community, which includes some 100,000 Gulenists with considerable influence over schools and other cultural organizations.
Members of Erdogan's carefully cultivated German following gathered for a protest outside the Turkish Embassy in Berlin on Saturday, while protestors in Gelsenkirchen broke the windows of an organization tied to Gulen.