In 1930, Clyde Barrow met Bonnie Parker after a 20-month stay in prison. For nearly two years, the pair (accompanied by Barrow’s brother and his wife at different times) spearheaded a vivacious crime spree that ultimately culminated in their demise. The movie certainly got this part right, but contrary to the cinematic narrative, the Barrow Gang rarely robbed banks. They settled for more poachable prey like restaurants, grocery stores, and gas stations. When they did take on a bank, it was generally based out of a small town and their bounty never exceeded $1,500 (per Britannica).
The fact that they didn’t drain banks of their perceived predilection for manipulation and corruption confounds the movie’s underlying theme that greatly contributed to its popularity. While their lasting notoriety is indeed warranted (several police officers died in shootouts trying to apprehend them), their tactics were generally understood to be sloppy and disorganized. That’s probably why they wound up on the wrong end of bullets hailing from a police blockage in Michigan while driving a stolen car (per Britannica).