Spurs supporters, many of whom call themselves "The Yids", were instructed by their own website not to attempt to bring any Stars of David to the game the Wisla Krakow Uefa Cup tie, so as not to "make a political statement". A significant section of the Polish team's support is notorious for antisemitic chants.
So in effect, Spurs fans were told not to make the antisemites angry. Wasn't that tried in the 1930s?