Implement "Do Not Track" as privacy-by-design
The purpose of Tor Browser is to build a private-by-design reference implementation of "Do Not Track", but through the alteration of browser behavior and without the need for regulation or begging. See also: https://blog.torproject.org/blog/improving-private-browsing-modes-do-not-track-vs-real-privacy-design
We've done this by taking the basic ideas of "Do Not Track" and defining them as privacy properties in terms of linkability between domains: https://www.torproject.org/projects/torbrowser/design/#privacy
Here's the current list of known violations of the identifier linkability: [[TicketQuery(keywords=tbb-linkability,status!=closed,format=table,col=component|priority|type|summary|owner,order=priority)]]
Here's the current list of known violations of fingerprinting linkability: [[TicketQuery(keywords=tbb-fingerprinting,status!=closed,format=table,col=component|priority|type|summary|owner,order=priority)]]