Penguin presents the unabridged, downloadable, audiobook edition of On Liberty, written and read by Shami Chakrabarti.

On 11 September 2001, our world changed. The West's response to 9/11 has morphed into a period of exception. Governments have decided that the rule of law and human rights are often too costly.

In On Liberty, Shami Chakrabarti - who joined Liberty, the UK's leading civil rights organization, on 10 September 2001 - explores why our fundamental rights and freedoms are indispensable. She shows, too, the unprecedented pressures those rights are under today. Drawing on her own work in high-profile campaigns, from privacy laws to anti-terror legislation, Chakrabarti shows the threats to our democratic institutions and why our rights are paramount in upholding democracy.