In addition to spending 60 days in prison, Joanna Smith will have to serve 150 hours of community service, ten of which she must spend cleaning graffiti

The group say the institution is allowing the Adani Group—which has ties to coal mining and arms manufacturing—to "greenwash" its reputation via sponsorship

The wide-ranging group, a kind of think tank for creative resistance, calls itself Hard Art

The Valentine’s Day protest was carried out by members of the environmental group Declare Emergency

A coalition of environmental-justice organisations renewed their calls for the removal of board chair Marie-Josée Kravis

A climate activist with the group Declare Emergency has been taken into custody over a paint-smearing incident at the museum last year

Members of Riposte Alimentaire demand the right to "healthy and sustainable food" after splattering pumpkin soup over the protective glazing in front of the world's most-viewed painting

Joanna Smith faces a maximum sentence of five years in prison and up to a $250,000 fine

Activists with Extinction Rebellion staged protests inside the Guggenheim Museum and the American Museum of Natural History

Two activists affiliiated with the group Extinction Rebellion took to the rostrum during a sale of works on paper

And a new show opens at the city's William Morris Gallery with a focus on radical landscapes

Two Just Stop Oil Activists targeted the work as a protest against new UK gas and oil licences, just over a century after the suffragette Mary Richardson attacked the same painting in 1914

A member of the Dernière Rénovation group scaled the famous glass monument over the weekend

After a protest in front of the museum’s main entrance, 16 activists were arrested after further actions inside the museum

A man was arrested following the action, which was organised by the Canadian activist group On2Ottawa

Joanna Smith and Tim Martin face up to five years in prison after smearing paint on the case and pedestal of a Degas sculpture at the National Gallery of Art

The museum is in contact with the owner, Musée d’Orsay, about reinstalling Le jardin de l’artiste à Giverny in its exhibition

Activists urged the New York museum to distance itself from board chair Marie-Josée Kravis and her husband Henry Kravis due to their ties to the fossil fuel industry

The two protesters have have been indicted by federal prosecutors on charges of conspiracy

A man and a woman have daubed red and black paint on the display case containing 'Little Dancer'

Italian officials have approved draft bill to bring in tougher sanctions for protestors who target heritage

The museum was reportedly to be the site of a “guerrilla art installation” by Extinction Rebellion Boston on 18 March

Prospective lenders are increasingly nervous that their works will be targeted by attacks or be vulnerable to a lack of security during museum closures

The Art Newspaper’s obituaries editor speaks to the New York artist about how his journalistic training informs his tributes to figures like Greta Thunberg and Dolly Parton

New and refurbished museums open in Antwerp, Los Angeles and Sydney as Italian archaeologists make the "discovery of a generation" in a hilltop town in Tuscany

Plus, our writers sit down to discuss their favourite works of the year

Vincent’s best-loved paintings are singled out by climate protestors

Demonstrators poured orange paint over the US artist Charles Ray's Horse and Rider

Choosing museums as a backdrop to protests is "a testament of their symbolic power and relevance in the discussions around the climate emergency,” International Council of Museums says

Curators at Leopold Museum say that Letzte Generation's protest against fossil fuel projects left no damage to either the picture or the original frame