A group of activists on Friday splashed pea soup onto a Vincent van Gogh masterpiece in Rome, in a protest they warned will continue until more attention was paid to climate change. 'The Sower', an 1888 painting by the Dutch artist depicting a farmer sowing his land under a dominating sun, was exhibited behind glass and undamaged. Four activists were arrested, according to news reports. The climate activists from Last Generation called their protest 'a desperate and scientifically grounded cry that cannot be understood as mere vandalism.'