If you only learn history through statues, then you really aren't learning history.
If you only learn history only through school, then you really aren't learning history.
Heck, if you only learn history through certain sources, then you really aren't learning history.
History can't be changed. History can't be erased.
But it's up to the individual to learn the history they want to learn - and even then, that's probably just one view of history.
Basically, learning history is just complicated. And it's far more complicated than 255 characters in Twitter.