I don't know what's wrong with being proud of Britain, as long as you're not xenophobic or chauvinistic about it.
I get the idea is to try and lump together some pictures and imply that this is what people on the right wing all like but full English breakfasts, beer, vodka, prawn cocktail crisps, crumpets? I'm pretty sure a wide, wide range of people like those things.
Also it's kind of ironic suggesting that British pride is synonymous with the flag of Nazi Germany, considering those who aren't small minded bigots are aware that one of the proudest things this nation has done is commit everything it had to stopping it.
Rubbish picture, poor attempt, ill thought out, 2/10 - would not retweet.