As Israel’s army geared up for a return to brutal clashes along the Gaza border on Friday, Palestinian militants called on its people to demonstrate peacefully as a return to violence threatened to plunge the region into an all-out war.

“The most important message tomorrow is the masses gathering in a peaceful manner,” Khaled al-Batsh, a senior leader of the Palestinian Islamic Jihad (PIJ) terror group and an organizer of the march, wrote in a statement on Thursday evening.