DeG got there before me and made the points I was going to make.
As an addition to what he was saying..I doubt very much that the majority of people who celebrate St Patrick's day or Burns'night with such gusto are overly nationalistic for the rest of the year. They are swept along with the fervour of the moment...and an excuse to party. In the same way,when the English rugby ,cricket or football teams are doing well,people who have never taken the slightest interest in these sports suddenly festoon their cars and/or houses with St George's flags. I also suspect that large numbers of people have no idea why they celebrate Nov 5...but just watch the protests if anyone tries to ban it!! (I'm sure many of us regret that Guy Fawkes and his comrades aren't still with us!...OK..before any one starts quoting historical facts...that was tongue in cheek)
Les W...although I may share some of your grievances...I think the privileges and rights you think you are lacking are more to do with political expediency than attempts to suppress any feeling of Engish identity (though on this point I am largely in line with GSS

geoff t

ps I think the song is crass