A pro-Palestine activist sprayed paint and then slashed a 1914 painting of Lord Arthur Balfour at Trinity College on Friday. Cambridgeshire Police officers attended the scene “to secure evidence and progress the investigation” following the attack at the University of Cambridge college, which was filmed and posted on X (formerly Twitter) on Friday afternoon. The footage shared on X showed a woman spraying red paint on the painting before taking a knife to the portrait by artist Philip Alexius de Laszlo. Lord Arthur Balfour (1848-1930) is the British politician who cleared the way for the found…