History: Can Men Change?

I asked this question about Joesph Stalin, based upon the idea that over time, new views will be made about each man.  Take for example the view that Stalin, pictured here in 1945 helped win the Second World War.

Some people have said that in the communist countries there was no mention of other countries who helped fight the war.  Then again, the same can be said about the Western World.  Numbers can be made to tell stories as well.

Can men be changed over time by the course of history?

Should we look to people and places and begin to ask historical questions about what happened or should we simply become more accepting of what we are told?