The statue should stay. If we begin a revisionist review of every statue in the country judged according to the accepted wisdom of our time then we will lose a lot of statues.

Is this not what ISIS is doing in Iraq?

And does it end there? Should we examine the literature that exists and destroy that which promotes values that we now generally agree is contrary to current thinking.

I think not.

These things should be retained but recognised for what they are, relics of a different time when values were different and, probably, wrong.

We cannot rewrite history or pretend that it didn't happen.