Here are some songs dealing with issues related to U.S. copyright law:Also, Here (pdf) is a paper by James Boyle which begins by quoting the following humorous lyric:
The law locks up the man or woman
Who steals the goose from off the common
But leaves the greater villain loose
Who steals the common from off the goose.
The law demands that we atone
When we take things we do not own
But leaves the lords and ladies fine
Who take things that are yours and mine.
The poor and wretched don't escape
If they conspire the law to break;
This must be so but they endure
Those who conspire to make the law.
The law locks up the man or woman Who steals the goose from off the common And geese will still a common lack Till they go and steal it back
T.