Please use the correct word when talking about the "deal". It's a treaty which, as NJ observes, is a capitulation not an agreement between equals, although, unlike NJ, I think it was drafted exclusively by the EU's lawyers. Like other treaties signed by the vanquished, e.g. the Treaty of Versailles, it demands war reparations and the surrender of territory.
Versailles, of course, led to Hitler. (Anybody watch the recent two-parter on BBC "Hitler: the Rise of Evil", by the way?) It would be nice to think that the Brexit betrayal led to a determined, though British and principled resistance. Unfortunately the only likely response will be a sullen resentment and contempt for our parliamentary "representatives" and their allies in the media.