One challenge is getting all the facts right. Since it's based on a true story, there's a responsibility to be accurate. Another is dealing with the real - life people involved. Their approval or cooperation might be needed. Also, condensing a long and complex real - life event into a film's runtime can be difficult.
It's hard to say for sure. Sometimes movies or stories draw inspiration from real events but are fictionalized. Maybe there are elements of truth, but it could also be mostly made up.
Run Rabbit Run is purely fictional. It's not based on any real events or people. The plot and characters were developed to entertain and engage the audience through creative storytelling.