Back in March why was Bernie surprised to see a Nazi flag waved at his political rally, is he as big an idiot as his supporters?

BERNIE SANDERS DESCRIBES HIMSELF AS A DEMOCRATIC SOCIALIST ! AS AN ECONOMIC SYSTEM, FASCISM IS SOCIALISM WITH A CAPITALIST VENEER. NAZI: A MEMBER OF THE NATIONAL SOCIALIST GERMAN WORKERS' PARTY. SHHH! LET THE CAT OUT OF THE BAG. OR THOSE UNEDUCATED YOUNGSTER THAT FOLLOW ME MIGHT REALIZE I'M A CLOSET FASCIST AND STOP SUPPORTING ME !