BERLIN (Reuters) – Up to 30,000 men, women and children joined an anti-war demonstration in central Berlin on Sunday, with many waving Ukrainian flags or holding banners with slogans opposing the Russian invasion. Gathering near the Brandenburg Gate, symbol of a divided Germany during the Cold War, protesters – including people in wheelchairs and toddlers in pushchairs – walked through the streets of Berlin, at times chanting and singing. Slogans on posters and banners included “Stop Putin”, “Stop War”, “Russian soldiers go home” and “Solidarity with Ukraine!” “Above all, it’s extremely import…