The internet has had a long history of digital rights. Organisations like the Electronic Frontier Foundation have helped keep digital freedom over the years, helping to make the internet what it is today. The latest fight in the digital frontier is Digital-Rights management. It is worth listening to Cory Doctorow's speech from OSCON Europe 2005. Anyone who is interested in music, home-cinema or other products of the entertainment industry: beware!
He also mentions a relatively new UK group: The Open Rights Group that aims to raise awareness of digital rights issues. Helping, ultimately, people to keep the rights they've bought.