30 December 1989,
In the march of the Herrera de la Mancha, 12,000 people met in Madrid. More than 200 buses went to the march each year to show solidarity with the Basque prisoners. In front of them, 1,000 policemen completed the barrier with horses, tanks and helicopters. They transmitted their solidarity to the prisoners via a free radio. The participants moved to the center of Madrid and caused a severe circulatory collapse. In the vicinity of Bernabéu, the Neo-Nazis threw stones at the caravan and wounded several people.
Source:
Herrera martxan Herrera, part -prebisio guztiak. Do.