Farmers drove tractors into Brussels at dawn on Thursday, renewing protests against the European Union's plans for a trade deal with the Mercosur bloc. Police expected around 10,000 demonstrators near the European Council, where EU leaders are due to meet for a summit.
The proposed agreement would phase out duties on most goods traded between the EU and Mercosur countries over 15 years.
Supporters say it would open markets linking Europe with Brazil, Argentina, Uruguay, Paraguay and Bolivia. Many farmers fear tougher competition and weaker protections for local producers.