An environmentalist from Sussex is among a group of protesters being sued for £5 million pounds by the energy company EDF.
The group called "No Dash For Gas" occupied a new power station in Nottinghamshire last October to demonstrate against the burning of fossil fuels. EDF says the week-long sit-in was dangerous and costly, and it's claiming compensation.
But others say the legal action is an attack on civil liberties. Malcolm Shaw has the story and speaks to campaigner Alistair Cannell and Doug Parr from Greenpeace.