An enraged crowd near Harvard University hurled expletives – and a brick – at a “doxxing truck” circling the campus Friday morning to expose students who allegedly signed a letter blaming Israel for last weekend’s Hamas attack, The Post has learned. Adam Guillette – the president of the nonprofit news watchdog Accuracy in Media that deployed the vehicle – said the rowdy mob blocked the female driver of the digital billboard-bearing box truck and began “banging on the windows, shouting things at the driver.” “Once you get out of that truck I’m going to kick your f–king ass!'” one person...