There is a difference between celebrating and learning.
If they want kids to come in dressed as royals and generals. What will the people from the empire come dressed as ?
Slaves from Africa with chains round their knock and feet, people in concentration comps in Africa, Asia, America both south and north, Australia (aboriginal heads on a stick or will one of them have a head to bring back as a trophy to show others), the native Americans being slaughtered with the intention of cleansing the whole race, dress as a Royal and have a slave carry minerals they have just looted, the countries being rinsed of resources with no benefits for its nations, go in like a generals with lots of armies to round up all the savages, carry a map with them and sit around drawing lines and claiming it's theirs ( the kingdoms that belonged to the barbaric savages does not matter, does it) . Maybe, the kids can come in dressed as some of the people displayed in the human zoo in London. Strip them off any dignity because they are subhuman. Maybe come in dressed like missionary and kill anyone who does not convert to Christianity while demonising all of the traditional religions of the natives across the globe. Maybe come in dressed like a plantation owner with a written book describing why it's ok to own slaves. How about come in like a colonial traveller ready to learn grab by shooting every on the land he wants.
Those who support the empire tell me how all of that is acceptable.
What a lot of crap to say that they were offering democracy when in actual fact they wanted to inset their dominance like they are still trying to do today. what they did to tribes and groups of people who tried uprising during different rebellions in the history of the empire is a disgrace.
Sometimes people don't like to know the dark side of history. Let's focus on what we did for the savages and how we made them more civilised. Without us they would be nothing.
That would be a wonderful celebration party.