Spanish farmers, who like many across Europe have been protesting against EU agricultural policy, on Monday blocked a major boulevard in the capital Madrid in what was their biggest action to date. Thousands of protesters from across the country gathered in front of the European Commission’s representation in the Spanish capital calling for fairer prices, among other demands. Numerous tractors blocked the Paseo de la Castellana, one of the city’s major thoroughfares. Associations of farmers and livestock breeders, who had organized the protests, put the number of participants at 20,000, while …