Everything comes down to persepective, everything is lost when you band every person from one nation together, or only view history based on one side.
I am English, and damn proud to call myself so, I have Welsh and Scottish ancestry (Grandparents), but would never assert that it has any inherrant meaning to me. In fact, I'd more likely call myself a Yorkshireman first, English second.
I cannot stand the football fan issue, it's the greatest game in the world, with the worst fans in the world. Every nation has this problem, Any true footbal fan HATES the behaviour of the Yobs and hooligans, it tarnishes the beautiful game. While from what I have seen, a lot of other countires don't seem to know they have a problem. Russia world cup, the population seemed to be actively cheering the Ultras as they caused chaos to all participating nations and their fans, who brought their own versions of Ultras, who caused more chaos.
But it's the English fans who get the stick.
The turkish league had the delightful issue Gunmen attacking the Fenerbahce team bus in 2015, and fan violence if still prevalant, Togo team bus attacked by gunmen. Liverpool fan attacked by Roma fans. The Copa Libertadores violence between the TEAMS on the tunnel after the game (last week).
It is not a unique problem, but it's one football has failed to deal with, not the English.
The terrible crime of having pride in the Empire? You can have pride in the good things the empire did for our nation. It provided the stepping stone for the working class and women to vote. It came to it's senses and abolished Slaverly in 1807, was that too late, yes, but it still happened, the West African Squadron would go onto patrol slave routes and liberate 150000 people from slave ships, over 50 years.
Travel and communications changes, Sport travelled globally, 6 of the 10 of the worlds most popular sports are British. The outlaw of Sati (Widow Burning). All of this is a positive in my book, and something I'm going to be proud of.
While yes, the English were dicks, but so were the French, the Belgians, the Spanish, the Portugese.
Then there's the small matter on that tiny Monglian Empire, I seem to recall they were great to their subjects, or the Babylonians, or the Byzantines, the Romans, the Incans
The Dutch, The Danish, The Iranians (There have been a few empires based in the Iranian region), Tunisia, Ethiopia, China, Japan.
All of these and so many more, but it's the English who should feel guilty for having had an empire.
The comparison to Nazi Germany is not the same thing, and of course the germans are appalled by the Holocaust, but they brought the Germans out of the Depression era, created the Autobahns, had a huge programe of public works and built schools and hospitals. Fanta, they gave us Fanta.
What happened was appalling and now in the contaxt of history, we can see what that, but blindly ignoring any good thing they did is ignorant, no matter how small it was.
To reiterate, I'm English, and Damn proud to be.