Hundreds of farmers drove their tractors into central Madrid on Wednesday as part of ongoing protests against EU and local farming policies and to demand measures to alleviate production cost hikes.

The protest, the biggest to take place in the Spanish capital after more than two weeks of daily protests across the country, will include a rally outside the agriculture ministry headquarters.

Many of the tractors flew Spanish flags and some farmers carried banners reading, “There is no life without farming”, and “Farmers in Extinction”.

“It is impossible to live from the rural industry, which is what we want, to live from our work. That is all we ask for,” Silvia Ruiz, 46, a livestock farmer from the north-central area of Burgos said.

The Union of Unions organising group said they were bringing 500 tractors and many more farmers on buses. Many of the tractors may have to stay outside the city because of government restrictions.

Similar protests have taken place across the bloc in recent weeks. Farmers complain that the 27-nation EU’s policies on the environment and other matters are a financial burden and make their products more expensive than non-EU imports. Spain and the European Commission, the EU’s executive arm, have made some concessions in recent weeks but farmers say they are insufficient.

Besides EU policies, Spanish farmers maintain that a law aimed at guaranteeing that wholesale major supermarket buyers pay fair prices for their goods isn’t being enforced while consumer prices soar.

In France, the EU’s largest agricultural producer, the government of President Macron is also under intense pressure from angry farmers who held major demonstrations last month and have since continued with more scattered protests to push for better pay and other assistance.