Perhaps you missed the cartoon, totally typical of the whole campaign, where those who didn't conform to the establishment's 'In' were labelled as racist, fascist, commies or bigots, or fellow travellers with such undesirables.
No, I didn't (and that was from the Daily Mail - a paper that drew cartoons of the like of Benn and Foot for decades, they didn't need the excuse of an EU referendum). But what you said was the organiser of the Remain campaign admitted using "dirty tricks" to win the argument. A cartoon in a newspaper is not an organiser