Participants and bulls returned to the streets of Spain for the "encierro," or bull-run of the San Fermin festival in Pamplona following a long pandemic-related hiatus. 

On each morning of the festival, six bulls are released to run from their corral through the narrow, cobbled streets of the old town over an 850-meter course.

Ahead of them are the runners, who try to stay close to the bulls without falling over or being gored. The bulls end up in a stadium where they are ritualistically attacked by a matador or bull-fighter.

In nearly all cases, the bull dies during the confrontation even if the matador suffers a serious or fatal injury. Critics say the tradition is brutal animal cruelty and should be stopped.

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