BARCELONA—Police intervened to move along thousands of people drinking and dancing in Barcelona’s city center and on the nearby beach, seeking to prevent dangerous overcrowding on the first full weekend after Spain lifted COVID-19 restrictions. “We have cleared people from central streets and also about 2,000 from the beach, some who of whom were not respecting restrictions on distances or health regulations, but there were no fights,” Major Ricardo Salas, of the Barcelona City Guard, told Reuters on Sunday morning. The government lifted a six-month state of emergency on May 9 at midnight local time, so this was the first chance for revelers to party throughout the weekend. There are still some restrictions in place. In Catalonia, for example, bars and restaurants are open from 7 a.m. until 11 p.m and the maximum number of people allowed at tables is four. With no more curbs on moving around the country, …