"It seems that American patriotism measures itself against an outcast group. The right Americans are the right Americans because they’re not like the wrong Americans, who are not really Americans." -(from Informed Comment)
-Eric J. Hobsbawm
"Dissent is the highest form of patriotism."
A reactionary says "my country, right or wrong", a progressive says "dissent is patriotic".
I don't think that their is a reason to be loyal to an an imagined entity at all.
Salman Rushdie once said that nation is the third greatest myth of our existence, following money and God.