The swastika (gammadion, "fylfot") symbol became a popular symbol of luck in the Western world in the early 20th century, as it had long been in Asia, and was often used for ornamentation. The Nazi Party adopted the symbol in the 1920s, and its use in Western countries faded after the Nazi association became dominant in the 1930s. In recent decades many public swastikas have been removed or covered over, although others have been deliberately retained as part of debate about historical preservation.