During the regency of Prince-Regent Luitpold, from 1886 to 1912, relations between Bavaria and Prussia remained cold, with Bavarians remembering the anti-Catholic agenda of Bismarck's "Kulturkampf", as well as Prussia's strategic dominance over the empire. Bavaria protested Prussian dominance over Germany and snubbed the Prussian-born German Emperor, Wilhelm II, in 1900, by forbidding the flying of any other flag other than the Bavarian flag on public buildings for the Emperor's birthday, but this was swiftly modified afterwards, allowing the German imperial flag to be hung beside the Bavarian flag.