A number of anti-terror marches in Turkey turned violent when the headquarters of Kurdish problem-focused Peoples’ Democratic Party (HDP) in Ankara, as well as its office in another Central Anatolian city were attacked by nationalist protesters on Sept. 8.

Dozens of demonstrators pelted the HDP headquarters in Ankara with stones, before they were dispersed by police. Police detained one protester over the attack, according to CNN Türk channel.

In the neighboring province of Kırşehir, HDP’s local office was attacked by another group and its flag was lowered, replaced by Turkish flag as the Nationalist Movement Party (MHP) supporters marched for a demonstration entitled “Damn Terrorism.”

The march turned violent when around 150 people in the crowd set fire to four shops owned by Kurdish businessmen, according to Turkish media.

The fire, which destroyed the four shops, was put out by fire brigades without causing casualties.