[Migrants scuffle with police during a protest demanding the opening of the border between Greece and Macedonia in the northern Greek border station of Idomeni, Greece, Sunday, March 27, 2016. A split appears to have developed among the groups of migrants at the Idomeni border encampment, with Greek riot police who, so far, have used only their shields to protect the border. (AP Photo/Darko Vojinovic)]IDOMENI, Greece (AP) — Several hundred Iraqis and Syrians in the Idomeni border camp are standing between protesters and the police, thwarting the protesters' efforts to march toward the fence separating Greece from Macedonia. Scuffles have broken out between the two groups.