06 March 1976,
The Spanish police killed Juan Gabriel Rodrigo Knafo in Tarragona. They organized a protest against the massacres of 3 March in Vitoria, but the police charged it before starting anything. Knafo entered a portal in search of refuge, persecuted by the police, and fell on the last floor, for reasons not yet clarified. In the judicial process of clarifying the facts, they only hindered the family.
Source:
Alex Romaguera (La Directa, March 3, 2016).