Barcelona's police say 80,000 people have rallied Sunday on one of the city's main streets, with many carrying Spanish and Catalan flags, AP reported.
One poster read in English: "We are Catalonians too, stop this madness!!"
The rally in favor of Spanish unity comes after several days of protests — some of which have spiraled into violent clashes with police — by Catalan separatists. They are angered by a Supreme Court ruling that sentenced nine of separatist leaders to prison for a failed 2017 secession attempt.
Polls say the 7.5 million residents of the wealthy Catalonia region are roughly evenly divided on the secession question.