What is the name of the primary symbol, which is now outlawed outside of the context of art or science, and was widely used even on the state flag?
Strafgesetzbuch section 86a The German "Strafgesetzbuch" (Criminal Code) in § 86a outlaws "use of symbols of unconstitutional organizations" outside of the contexts of "art or science, research or teaching". This concerns Nazi symbolism in particular and is part of the denazification efforts following the fall of the Third Reich.
National symbols of Malta This article is a vexillological summary of all flags and symbols in current use by the island nation of Malta. More information on the history of the various flags and emblems, as well as on their equivalents which are no longer in use, is found on the specific articles, linked to in the subtitle headings.