You've not been reading then. I repeat: they glued themselves to a chunk of glass, not the actual painting. Nothing has been defaced or damaged.

They also threw food on some of the paintings - whether or not they were aware of a protective glass pane beforehand is unknown - and at least in one case glued themselves to a 16th century picture frame, itself a priceless cultural artefact.

> They also threw food on some of the paintings - whether or not they were aware of a protective glass pane beforehand is unknown

Probably were, since as far as I can tell it's a stunt with no real intent to destroy anything.

> and at least in one case glued themselves to a 16th century picture frame, itself a priceless cultural artefact.

That's definitely not good.