Pedestrians Mowed Down by Van in Barcelona

The transcript discusses a massive incident in Barcelona's downtown area, with preliminary indications of a terrorist attack. The US consulate has advised people to avoid the area. The discussion touches on Catalonia's political context but clarifies that the incident is unrelated to local political issues. The situation is still developing, and official updates from the police are awaited.

What is the historical context of attacks in Catalonia as mentioned in the text?

What factors are suggested to be related to the incident in Barcelona?