Quote from Intrepid :

The reason people get so irate about this whole thing is because the day we forget or disrespect our past is the day we repeat it! People seem to forget that we are just humans not some advanced beings. I'm not against dressing up or what not btw

Very true, we should never forget the atrocities of the past. We should learn from them, in order never to allow them to be repeated. But that doesn't mean we should allow ourselves to become victims of the past.