ATHENS—Groups of locals attacked migrants camping on the island of Lesbos overnight, underscoring the continued tensions on Greek islands that continue to see thousands of Middle Eastern people arriving from Turkey each month.
Clashes erupted late Sunday in the main port town of Mytilene, where dozens of migrants have been squatting since last Wednesday to protest the dire conditions that new arrivals have lived in for about two years. The protesters were also demanding the right to be allowed to leave the island—something...