Devlet Bahceli praised the popular resistance to the July 15 attempted coup in his speech at Yenikapi Square in Istanbul.
“I watch Turkey beaming with pride, there is faith here, will here,” he said. “A new voyage begins from Yenikapi.”
He added: “People stood tall, taught a lesson to the traitors and terrorists of the July 15 coup bid.”
Bahceli, who controls the Turkish parliament’s fourth party, said the attempted coup was a “fresh attempt to invade, carry out a massacre and destroy Turkey”.
He called the Fetullah Terrorist Organization, which is held responsible for the coup attempt, a “cancer” and called on Turks to unite against the coup plotters.
The leaders of two other political parties -- the Justice and Development (AK) Party and the Republican People’s Party (CHP) -- are also due to address the crowd, as is President Recep Tayyip Erdogan.