By Andy Silvester The Square Mile is set to play host to a raft of climate and pro-Palestine protests today, including Extinction Rebellion, with one insurer’s building already covered in red paint. Groups from across the protest spectrum have planned disruption in the City today, with the Royal Exchange and Leadenhall Market likely to be the epicentre. Insurer AIG’s office has already been smeared in red paint. It is not immediately clear whether the damage is related to Palestinian or climate causes. A number of Extinction Rebellion (XR) protestors have been arrested over recent days, with p…