What is the movie?

Hi, cannot remember the movie name. The only thing that i remember, is that it is about some teenage high school or college students, which are kind of trying to fight for their rights against school council. One of the scenes: group of students are trying to write something on football ground with gasoline by flaming it, one of students was filming it. And another student gets caught by a flame and ends up in hospital, where other guys showing him the video they ve taken and supporting him. Really appreciate if you help me with this one. Couldnt find it for months