This documentary piece by Alison Klayman about China's Ai Wei Wei is one of the 2012 Sundance Film Festival's official selections. Here's a new trailer for Ai Weiwei: Never Sorry which tells the invigorating tale of one artist’s visionary quest for freedom of expression and struggle for human rights in his own nation.

The film will be released on July 27, which is just after Ai Weiwei’s scheduled official release from government-imposed house arrest.

Inspired by Ai’s famously rude photographs from the exhibition “Fuck Off,” an online initiative will be held that invites anyone to submit photos of themselves raising the middle finger to various social "injustices".

All submitted photos will then be presented to Ai Weiwei online in a collage on June 22. Submit your angry-fingered photo via Facebook, or tweet it with the tag “@AWWNeverSorry #RaiseYourFinger.”

Check out the trailer below: