(CALAIS) — About two dozen people protesting the demolition of a sprawling migrant camp in northern France climbed onto shanty rooftops on Tuesday, briefly stalling the tear-down. Bulldozer crews plowed through blustery, damp winds, working around the protesters, who ultimately came down from the buildings. By mid-afternoon, the demolition was proceeding unimpeded. Earlier in the day, a man and a woman standing together on a rooftop had warned police not to approach.