Credit: MGNLONDON (AP) — A group of activists attacked a pair of paintings by Dutch master Vincent van Gogh at London’s National Gallery by throwing what appeared to be tomato soup on the artworks. Friday’s attack took place shortly after two other activists were sentenced over a similar attack two years ago. Both paintings were from Van Gogh’s “Sunflowers” series. The gallery said they were not damaged thanks to protective glass coverings. The three activists from Just Stop Oil environmental group involved in the attack were arrested while the paintings were removed, examined, and then returned to their location. The exhibition reopened later Friday.