Tractors hit Madrid to protest EU's trade deal with South America
The tractors arrived in five convoys from across Spain, converging on the city centre and moving from Plaza Colon to the Ministry of Agriculture, bringing traffic to a standstill.
Protesters carried banners reading "No to our ruin" and "The Spanish countryside is not for sale".
Miguel Angel Aguilera, president of agricultural organisation Unaspi, warned the deal with the Mercosur bloc would affect all citizens.
"People will consume lower-quality products, we will lose food sovereignty, and there will be no competition," he said.