Ten years after Europe’s refugee crisis brought waves of desperate migrants to its shores, the Greek island of Lesbos is still living with the aftermath. Once the key landing point for people fleeing war and poverty, the island has returned to a sense of normalcy. Tourists are back, and some former refugees have settled into daily life. But traces of the crisis remain — from unmarked graves to the toys of refugee children in the beach. As the European Union moves to tighten migration policies, many locals fear the island could once again become a frontline for people seeking a new life in Europe.