Down in NOLA I once saw I sign in a donut shop that was even more explicit. "Restrooms are for customers only - must buy something." I guess people were browsing the donuts, taking a whiz, then deciding they weren't hungry. (This was right at the south end of the Lake Pontchartrain causeway, the 24 mile long bridge, so it must have happened all the time.) Or, more appropriate for a sex shop, I once saw a sign in the local Giant, "No magazines in restrooms without receipt." Which brought to mind a certain Seinfeld episode....
And, for some reason, United hasn't maintained the trademark on that one. Soooo, any of the supporters group or any of us could use that logo to put on scarves and apparel.
According to the trademark search I made minutes ago, the Art Deco Style/Third Reich-like logo was abandoned on 2/8/1999. That's why the Screaming Eagles were able to use it legally on one of their scarves and why some fans were able to use it legally on a special order of scarves from Poland ten or so years ago.
An informal group of fans acquired non-official D.C. United scarves ten or twelve years ago and one of the scarves featured the never used badge and the first official badge. As I recall, the company that produced the scarves was located in Poland.
Not just monarchies. The Weimar Republic -- the government overthrown by the Nazis -- had similar eagles as part of their iconography. Ditto the current German republic. Although it reads as "Nazi" to some Americans my guess is it doesn't in Europe or elsewhere.