DORTMUND, GERMANY - APRIL 04: People gather to mark the 10th death anniversary of the Turkish rooted Mehmet Kubasik, killed by NSU terrorists in Dortmund, Germany on April 04, 2016. Neo-Nazi racist terrorist group, National Socialist Underground (NSU) killed eight Turkish immigrants, a Greek worker and a German policewoman between 2000 and 2007, all apparently without arousing the suspicions of the German police or its intelligence services. ( Mesut Zeyrek - Anadolu Agency )

DORTMUND, GERMANY - APRIL 04: Flowers are seen on the ground as the people gather to mark the 10th death anniversary of the Turkish rooted Mehmet Kubasik, killed by NSU terrorists in Dortmund, Germany on April 04, 2016. Neo-Nazi racist terrorist group, National Socialist Underground (NSU) killed eight Turkish immigrants, a Greek worker and a German policewoman between 2000 and 2007, all apparently without arousing the suspicions of the German police or its intelligence services. ( Mesut Zeyrek - Anadolu Agency )

DORTMUND, GERMANY - APRIL 04: People gather to mark the 10th death anniversary of the Turkish rooted Mehmet Kubasik, killed by NSU terrorists in Dortmund, Germany on April 04, 2016. Neo-Nazi racist terrorist group, National Socialist Underground (NSU) killed eight Turkish immigrants, a Greek worker and a German policewoman between 2000 and 2007, all apparently without arousing the suspicions of the German police or its intelligence services. ( Mesut Zeyrek - Anadolu Agency )

DORTMUND, GERMANY - APRIL 04: People gather to mark the 10th death anniversary of the Turkish rooted Mehmet Kubasik, killed by NSU terrorists in Dortmund, Germany on April 04, 2016. Neo-Nazi racist terrorist group, National Socialist Underground (NSU) killed eight Turkish immigrants, a Greek worker and a German policewoman between 2000 and 2007, all apparently without arousing the suspicions of the German police or its intelligence services. ( Mesut Zeyrek - Anadolu Agency )

DORTMUND, GERMANY - APRIL 04: People gather to mark the 10th death anniversary of the Turkish rooted Mehmet Kubasik, killed by NSU terrorists in Dortmund, Germany on April 04, 2016. Neo-Nazi racist terrorist group, National Socialist Underground (NSU) killed eight Turkish immigrants, a Greek worker and a German policewoman between 2000 and 2007, all apparently without arousing the suspicions of the German police or its intelligence services. ( Mesut Zeyrek - Anadolu Agency )

DORTMUND, GERMANY - APRIL 04: People gather to mark the 10th death anniversary of the Turkish rooted Mehmet Kubasik, killed by NSU terrorists in Dortmund, Germany on April 04, 2016. Neo-Nazi racist terrorist group, National Socialist Underground (NSU) killed eight Turkish immigrants, a Greek worker and a German policewoman between 2000 and 2007, all apparently without arousing the suspicions of the German police or its intelligence services. ( Mesut Zeyrek - Anadolu Agency )

DORTMUND, GERMANY - APRIL 04: People gather to mark the 10th death anniversary of the Turkish rooted Mehmet Kubasik, killed by NSU terrorists in Dortmund, Germany on April 04, 2016. Neo-Nazi racist terrorist group, National Socialist Underground (NSU) killed eight Turkish immigrants, a Greek worker and a German policewoman between 2000 and 2007, all apparently without arousing the suspicions of the German police or its intelligence services. ( Mesut Zeyrek - Anadolu Agency )

DORTMUND, GERMANY - APRIL 04: People gather to mark the 10th death anniversary of the Turkish rooted Mehmet Kubasik, killed by NSU terrorists in Dortmund, Germany on April 04, 2016. Neo-Nazi racist terrorist group, National Socialist Underground (NSU) killed eight Turkish immigrants, a Greek worker and a German policewoman between 2000 and 2007, all apparently without arousing the suspicions of the German police or its intelligence services. ( Mesut Zeyrek - Anadolu Agency )

DORTMUND, GERMANY - APRIL 04: People gather to mark the 10th death anniversary of the Turkish rooted Mehmet Kubasik, killed by NSU terrorists in Dortmund, Germany on April 04, 2016. Neo-Nazi racist terrorist group, National Socialist Underground (NSU) killed eight Turkish immigrants, a Greek worker and a German policewoman between 2000 and 2007, all apparently without arousing the suspicions of the German police or its intelligence services. ( Mesut Zeyrek - Anadolu Agency )

DORTMUND, GERMANY - APRIL 04: Dortmund's mayor Ullrich Sierau gives a speech as the people gather to mark the 10th death anniversary of the Turkish rooted Mehmet Kubasik, killed by NSU terrorists in Dortmund, Germany on April 04, 2016. Neo-Nazi racist terrorist group, National Socialist Underground (NSU) killed eight Turkish immigrants, a Greek worker and a German policewoman between 2000 and 2007, all apparently without arousing the suspicions of the German police or its intelligence services. ( Mesut Zeyrek - Anadolu Agency )

DORTMUND, GERMANY - APRIL 04: People gather to mark the 10th death anniversary of the Turkish rooted Mehmet Kubasik, killed by NSU terrorists in Dortmund, Germany on April 04, 2016. Neo-Nazi racist terrorist group, National Socialist Underground (NSU) killed eight Turkish immigrants, a Greek worker and a German policewoman between 2000 and 2007, all apparently without arousing the suspicions of the German police or its intelligence services. ( Mesut Zeyrek - Anadolu Agency )

DORTMUND, GERMANY - APRIL 04: People gather to mark the 10th death anniversary of the Turkish rooted Mehmet Kubasik, killed by NSU terrorists in Dortmund, Germany on April 04, 2016. Neo-Nazi racist terrorist group, National Socialist Underground (NSU) killed eight Turkish immigrants, a Greek worker and a German policewoman between 2000 and 2007, all apparently without arousing the suspicions of the German police or its intelligence services. ( Mesut Zeyrek - Anadolu Agency )