However good a song may be to sing I find that it is offensive if it propagates lies.

Take "The Battle of New Orleans" for example. It implies that the British were cowardly and that they ran away.

Recently, I was reading a report of the battle which said that there were about 2,000 British troops and that they attacked the American fortifications three times. When they finally withdrew they left 1,971 dead and wounded on the field.

Not quite what the song implies.