"The "boot in your ass" song is crass."
Crass perhaps but very effective and hits the nail right on the head. Whenever this comes on in the car, the windows get rolled down and the volume turned up loud and that's with my husband in the car. If it's the kids we sing at the top of our lungs. Nothing wrong with showing your patriotism even if it is "crass". Do the same thing when the noonhour National Anthem is played only I don't sing because I'm crying.
Patriotism is civilized and polite, knowing that emphasizing "ass-kicking" is hardly the best way to love one's country. Nationalism, however...