Short version from PressTVs 'Bloody Sunday Revisited' documentary showing the truth of what happened and the cover-up by the British government as part of a "propaganda war" (plus some segments of the hidden army tapes of Bloody Sunday. I do not own this content, this has been uploaded for educational purposes. Links to original full version below;
'Bloody Sunday Revisited' https://youtu.be/KCsIg8l7Xa8