Riots among the Spitalfields weavers were common. Any decline of prices, or opposition in trade, would lead to violence. In 1765, when the king attended parliament to give assent to the Regency Act, the weavers formed a procession of red flags and black banners to protest the importation of French silks. The House of Lords were terrified into an adjournment, and in the evening, Bedford Estate was attacked, the mob claiming that the Duke of Bedford had been bribed into making the Treaty of Fontainebleau allowing importation from France.