During a protest on Parliament Lawns on Thursday, Extinction Rebellion presented a list of demands to the Parliament.

Protesters participated in a die-in, a demonstration in which people lie down as if they are dead, outside the Parliament.

The three core themes of the event were 'tell the truth', 'act now', and 'beyond politics'.

Extinction Rebellion spokesman Stuart Scott said the Tasmanian people deserve to have the opportunity to actively participate in what needs to be done to mitigate the crisis.

"Extinction Rebellion world-wide is calling on governments to acknowledge the rapidly escalating threat to life on earth and to tell people the truth about the impending climate catastrophe," Mr Scott said.

"Keeping people in the dark and ignoring the obvious threats is both a breach of the government's social contract, to keep its people safe, and a recipe for chaos - it is time to tell the truth."

Three protesters pinned Extinction Rebellion's demands onto the door of Parliament House.

Extinction Rebellion is demanding:

Meanwhile, Extinction Rebellion members in Launceston headed to the Launceston City Council meeting where councillors will be discussing whether to declare a climate emergency.