Actress Sally Field has been arrested at the weekly climate change protest Fire Drill Friday in Washington DC. 

Field jokingly posted "#freesallyfield" on her instagram account after she was arrested having joined her friend Jane Fonda, who has been protesting at the event since October.

Before her arrest, she told protestors: "We cannot sit back in our comfort zones, on our couches, and wonder, what can we do. We can get out, we can do something."

It is most likely that the Steel Magnolias actress will be charged with crowding, obstructing or incommoding, a misdemeanor under local laws in Washington.

Fonda, who has been arrested on many occasions, has made clear her plans on protesting as many times as it takes to get her climate change concerns and point across.