The Basque group called off the cease-fire late last year, raising fears of renewed violence.
The cause of the attack was unclear but seemed to be indirectly related to a Basque group that has heretofore been unidentified.
Although Smith was a foreigner, the police would be less friendly to a Basque group.
If the violent Basque separatist group only killed more people, Spain would surely give them what they want, too.
A disc with versions of songs from other Basque groups between 1980 and 2000, in honor of those groups.
Mr. Serra said the attack reflected how the police had restricted the Basque group.
Earlier this week the Madrid police rounded up a suspected six-member Basque group that was said to be planning attacks.
The government blamed a Basque separatist group.
The Basque armed group ETA had the works as one of its targets.
Portugal's Constitution allows members of the Basque group to claim their crimes are politically motivated and not subject to extradition.