:::Please see WP:RS. It says the following: 

 :::* Wikipedia articles should be based on reliable, published sources, making sure that all majority and significant minority views that have appeared in those sources are covered (see Wikipedia:Neutral point of view). 

 :::The association of Wagner and Nazism is very common in literature. Wikipedia is not here to present original research, but to report what reliable sources say. It's not our fault that so many people have discussed this topic. Your second complaint is irrelevant; put together, the articles Die Hochzeit, Die Feen, Das Liebesverbot, Männerlist grösser als Frauenlist, Rienzi, The Flying Dutchman, Tannhäuser, Lohengrin, Das Rheingold, Die Walküre, Siegfried, Götterdämmerung, Tristan und Isolde, Die Meistersinger von Nürnberg, Parsifal, Symphony in C major (Wagner), Das Liebesmahl der Apostel, Wesendonck Lieder, Siegfried Idyll, Wagner tuba, Parsifal bell, Bayreuth Festival, Bayreuth Festspielhaus and Bayreuth canon amount (according to Wikipedia) to 420,367 bytes at the moment, which is not a far cry from the shortest item mentioned in the page List of longest novels.