Hundreds of Columbia University alumni led by high-profile graduates demanded that cops end the pro-terror protests Tuesday — and faculty who support them be suspended. More than 2,000 people signed an open letter to the college’s under-fire president, Minouche Shafik, calling for “immediate and resolute action” to end the antisemitic protests. 5 Students barricaded themselves inside Hamilton Hall, an academic building that has been the focal point of previous student protests. Getty Images The alumni spoke out after students smashed their way into Hamilton Hall on the Morningside Heights campus in the early hours of Tuesday after a deadline to...