I agree with Rokerijdude11. Too many people think that putting a plastic flag on their car makes them patriotic, just like the person who sends $5 to Darfur in order to get back a nice thank you postcard.
I mean what would Christians think if someone went driving around with a two foot plastic jesus on their roof? Would that make that person a good Christian or a dilluded imbecile who has no idea about what they claim to believe.
The reason nationalism has become a bad word is because nations change, societies change, saying that you love and trust something no matter what it does is wrong. If your best friend kills your sister you don't back him up! You can believe in and love the ideals of America but when people spout nationalism it is not really nationalism or patriotism it is just a man-crush on the government that claims to be the nation.
Just like the bible people can twist and distort the name of their nation into a disgusting blasphemy of what it originally represented.