What reason does anyone have to believe that the Historians are wrong and they are right?

I have no idea about anyone else. For myself I will say, once again, there is no such thing as an unbiased view of history. No right, no wrong. Historians, and everyone else for that matter, work to their own agenda and within their own remit.

Nelson Mandela was a freedom fighter.
Nelson Mandela was a terrorist.
In the 1980's industrial action by the miners brought the country to it's knees.
In the 1980's action against the miners by the government brought the country to it's knees.
Oswald Moseley was a visionary who wanted the best for England.
Oswald Moseley was a fascist traitor.


Need I go on?

DtG