You know what I think about "feeling ashamed of" some deeds of ancestors.
I for my part I am very happy that we have this huge memorial. It is like a huge salt grain in a wound. And yes, it may hurt sometimes. But I think by this pain staking needle constantly remembering us what is wrong one can improve and do the right thing and thus better oneself. Looking straight into the truth just can help you to make the right decisions. Ignoring truth only may lead to repeat the same mistakes.
PS: And I agree: there had been some awful posts here directed at the British. I ignored them on purpose as they really spoke for themselves. Some ppl just are so *** that it is useless to argue with them as there is no hope that they can learn. You on the contrary appear like somebody that is able to learn and not as somebody dumb. So take it as a compliment that people argue with you