Hot Docs, North America's biggest documentary film festival, kicks off its 2011 run on April 28 in Toronto. Jam-packed with documentaries running through May 8, Moviefone Canada will be there from start to finish, offering up looks at some of the festival's noted films.

There is a time in many young people's lives where getting involved in a protest seems like a good idea. It is a right in many countries, and well-functioning democratic societies promote these acts of dissent. The hope is that something positive will happen: policy change, business practices reined-in, or public opinion swayed. But what happens when nothing happens?

'If A Tree Falls: A Story of the Earth Liberation Front' is a documentary about these specific conditions.