The most discrediting is the claim that the Union abolished slavery. The Confederates beat the Union to it ,while the war was in progress, they did abolish slavery.

The Union only did so after they had won. And the film, well never believe anything any American tells you in future unless they are a card carrying Wobbly. The James gang rode in to surrender after the war finished, but were met by gunfire and so forced to take the outlaw trail.

It is hardly news now, everyone knows about the lies, but it was shown on Channel 5 TV where I am, and made much anti USer anger.