Is stealing a presidential portrait a prison-worthy crime? Or a laudable act of civil disobedience?

Courts around France are grappling with this question in response to an unusual new environmental movement that's aiming to push French President Emmanuel Macron to do more to fight climate change.

One by one, environmental activists around France have removed Macron's official portraits from more than 130 town halls this year, from the foothills of the Alps to the Left Bank of Paris.

Their point: Even as Macron portrays himself on the global stage as Mr Climate, the centrist, business-friendly president isn't acting boldly enough to change his own country's planet-damaging ways. They're notably angry that France has lagged on its international commitments to increase use of renewable energy and reduce emissions. France remains well behind its European neighbours in its use of renewable energy.

The portrait-removers have been facing trials around the country, with some fined, others acquitted. An appeals trial of the first court case was held last week in Lyon with the ruling still pending, and a new trial is scheduled later this month.

Mont Blanc 100 years on: Climate change impact revealed Show all 7 1 /7 Mont Blanc 100 years on: Climate change impact revealed Mont Blanc 100 years on: Climate change impact revealed Mont Blanc aerial photographs from 1919 (left) and 2019 (right) The images show the impact that climate change has had upon the mountain's glaciers Walter Mittelholzer, ETH-Bibliothek Zürich/Dr Kieran Baxter, University of Dundee Mont Blanc 100 years on: Climate change impact revealed Walter Mittelholzer's biplane Walter Mittelholzer biplane photo ETH-Bibliothek Zürich ETH-Bibliothek Zürich Mont Blanc 100 years on: Climate change impact revealed Mont Blanc aerial photographs from 1919 (left) and 2019 (right) Mont Blanc aerial photographs from 1919 (left) and 2019 (right) showing the impact that climate change has had upon the mountain's glaciers 1919 - Walter Mittelholzer, ETH-Bibliothek Zürich 2019 - Dr Kieran Baxter, University of Dundee Permission from university to use with article Walter Mittelholzer, ETH-Bibliothek Zürich/Dr Kieran Baxter, University of Dundee Mont Blanc 100 years on: Climate change impact revealed Walter Mittelholzer Walter Mittelholzer portrait Doppelsteuer-Schulflugzeug. Herstellung K+W Thun (Lizenz Robert Wild), 1. Serie. Werk. Nr. 13 bis 18 bzw 141 bis 146, Motor Mercedes D.I. Die Ablieferung erfolgte von MÃ¤rz bis Mai 1917, im Einsatz bis 1934. (Dual control trainer aircraft. Production K + W Thun (license Robert Wild), 1st series. Plant. Nos. 13 to 18 and 141 to 146, engine Mercedes D.I. The delivery took place from March to May 1917, in use until 1934.) ETH-Bibliothek Zürich Mont Blanc 100 years on: Climate change impact revealed Mont Blanc aerial photographs from 1919 (left) and 2019 (right) Mont Blanc aerial photographs from 1919 (left) and 2019 (right) showing the impact that climate change has had upon the mountain's glaciers 1919 - Walter Mittelholzer, ETH-Bibliothek Zürich 2019 - Dr Kieran Baxter, University of Dundee Walter Mittelholzer, ETH-Bibliothek/Dr Kieran Baxter, University of Dundee Mont Blanc 100 years on: Climate change impact revealed Dr Kieran Baxter photographing Mont Blanc in 2019 Kieran Baxter in a helicopter, photographing Mont Blanc in the places where Walter Mittelholzer took images in 1919 Dr Alice Watterson, University of Dundee Dr Alice Watterson, University of Dundee Dr Alice Watterson, University of Dundee Mont Blanc 100 years on: Climate change impact revealed Dr Kieran Baxter in front of the glacier Kieran Baxter glacier portrait Dr Alice Watterson, University of Dundee Dr Alice Watterson, University of Dundee Dr Alice Watterson, University of Dundee

The protesters don't fit a single mould – one is a math teacher, another works for the SNCF national rail company, another is an organic vegetable farmer.

At last week's trial, defendant Helene Lacroix-Baudrion argued that the portrait removal was “an act aimed at taking care of life and our environment.”

“We just want Macron, who holds himself up as a climate defender, to respect France's commitments under the Paris Agreement,” she told the Associated Press.

An expert working for the UN climate change agency testified as a defence witness at the trial, and climate activists gathered for a boisterous protest outside the courthouse.

The trials themselves have turned into public debates on civil disobedience, France's rich tradition of protest – and of course, the environment.

France is divided over how, and how fast, to cut emissions blamed for worsening climate change. Macron argues that he's doing more than most, and has stood up to US President Donald Trump on the need for countries and corporations to cooperate to cut emissions.

However, Macron backed down on a fuel tax last year meant to help wean France off fossil fuels, because the tax triggered the yellow vest protest movement against economic injustice, which saw months of violent protests that devastated some major shopping streets in Paris.

So activists started targeting Macron's portraits, symbolically dethroning him to demand action.

Several brought stolen portraits to a march at the G7 summit Macron hosted in Biarritz in August, to try to embarrass him at the global event . They brandished the pictures upside down, arguing that his climate policy is the opposite of what the planet needs.

French law says the acts can be considered “group theft,” which can be punishable by several years in prison. No court seems willing to go as far as locking up the portrait-removers, but the verdicts have been mixed.

Six portrait-removers were convicted in the first trial, in Bourg-en-Bresse in June, but five were only given suspended fines. The sixth was fined €250 (£215) because he already had a criminal record.

The court ruling said it wasn't clear how removing the portraits would “save humanity from ecological disaster” and argued that “other avenues were open to the defendants to defend their cause.”

The protesters themselves, from the Non-Violent Action COP21 activist group, accepted the ruling, but the prosecutor appealed, seeking tougher punishment.

In September, a Lyon court acquitted two activists, ruling that they had a “legitimate motive” and that “climate upheaval is a constant fact that seriously affects the future of humanity.”

“Faced with the lack of respect by the state” for its climate commitments, the ruling reads, “the citizens' means of expression in a democratic country cannot be reduced to the votes cast in elections.”

A few weeks later, a Paris court fined eight activists €500 (£431) each.

Nine more trials are scheduled in coming months, all over France.