ANKARA, TURKEY - SEPTEMBER 17: People hold Turkish flags as they march from the Sihhiye Square through the Grand National Assembly of Turkey to say "no to terrorism and yes to brotherhood" during a mass demonstration against terrorism organized by fourteen NGOs in Ankara, Turkey on September 17, 2015. (Gökhan Balcı - Anadolu Agency)

ANKARA, TURKEY - SEPTEMBER 17: People wave Turkish flags as they march from the Sihhiye Square through the Grand National Assembly of Turkey to say "no to terrorism and yes to brotherhood" during a mass demonstration against terrorism organized by fourteen NGOs in Ankara, Turkey on September 17, 2015. (Erçin Top - Anadolu Agency)

ANKARA, TURKEY - SEPTEMBER 17: People hold Turkish flags as they march from the Sihhiye Square through the Grand National Assembly of Turkey to say "no to terrorism and yes to brotherhood" during a mass demonstration against terrorism organized by fourteen NGOs in Ankara, Turkey on September 17, 2015. (Erçin Top - Anadolu Agency)

ANKARA, TURKEY - SEPTEMBER 17: People wave Turkish flags as they march from the Sihhiye Square through the Grand National Assembly of Turkey to say "no to terrorism and yes to brotherhood" during a mass demonstration against terrorism organized by fourteen NGOs in Ankara, Turkey on September 17, 2015. (Erçin Top - Anadolu Agency)

ANKARA, TURKEY - SEPTEMBER 17: People hold Turkish flags as they march from the Sihhiye Square through the Grand National Assembly of Turkey to say "no to terrorism and yes to brotherhood" during a mass demonstration against terrorism organized by fourteen NGOs in Ankara, Turkey on September 17, 2015. (Fatih Aktaş - Anadolu Agency)

ANKARA, TURKEY - SEPTEMBER 17: People wave Turkish flags as they march from the Sihhiye Square through the Grand National Assembly of Turkey to say "no to terrorism and yes to brotherhood" during a mass demonstration against terrorism organized by fourteen NGOs in Ankara, Turkey on September 17, 2015. (Fatih Aktaş - Anadolu Agency)

ANKARA, TURKEY - SEPTEMBER 17: People march under a Turkish flag from the Sihhiye Square through the Grand National Assembly of Turkey to say "no to terrorism and yes to brotherhood" during a mass demonstration against terrorism organized by fourteen NGOs in Ankara, Turkey on September 17, 2015. (Fatih Aktaş - Anadolu Agency)

ANKARA, TURKEY - SEPTEMBER 17: People hold Turkish flags as they march from the Sihhiye Square through the Grand National Assembly of Turkey to say "no to terrorism and yes to brotherhood" during a mass demonstration against terrorism organized by fourteen NGOs in Ankara, Turkey on September 17, 2015. (Fatih Aktaş - Anadolu Agency)

ANKARA, TURKEY - SEPTEMBER 17: People wave Turkish flags as they march from the Sihhiye Square through the Grand National Assembly of Turkey to say "no to terrorism and yes to brotherhood" during a mass demonstration against terrorism organized by fourteen NGOs in Ankara, Turkey on September 17, 2015. (Fatih Aktaş - Anadolu Agency)

ANKARA, TURKEY - SEPTEMBER 17: People hold Turkish flags as they march from the Sihhiye Square through the Grand National Assembly of Turkey to say "no to terrorism and yes to brotherhood" during a mass demonstration against terrorism organized by fourteen NGOs in Ankara, Turkey on September 17, 2015. (Fatih Aktaş - Anadolu Agency)

ANKARA, TURKEY - SEPTEMBER 17: People hold Turkish flags as they march from the Sihhiye Square through the Grand National Assembly of Turkey to say "no to terrorism and yes to brotherhood" during a mass demonstration against terrorism organized by fourteen NGOs in Ankara, Turkey on September 17, 2015. (Fatih Aktaş - Anadolu Agency)

ANKARA, TURKEY - SEPTEMBER 17: People wave Turkish flags as they march from the Sihhiye Square through the Grand National Assembly of Turkey to say "no to terrorism and yes to brotherhood" during a mass demonstration against terrorism organized by fourteen NGOs in Ankara, Turkey on September 17, 2015. (Fatih Aktaş - Anadolu Agency)