Dozens of helmeted police marched on to Columbia University’s campus in the heart of New York City on Tuesday and began evicting a building that had been barricaded by pro-Palestinian student protesters. AFP journalists could see police climbing up to the second story of Hamilton Hall from a laddered truck and disappear inside, as student newspaper the Columbia Spectator said arrests were being made. Hamilton Hall had been barricaded at dawn by students who vowed they would fight any eviction, as they protested the soaring death toll from Israel’s war in the Gaza Strip. The action came as univ…