http://www.tjcenter.org/ArtOnTrial/flag.html
The idea of the showcase on the left side of the page of the above link is that you have to step on the American flag in order to sign the book. The "controversy" is that many people believe it's treasonous or disrespectful or un-American or un-patriotic to step on an American flag or even display it at the wrong angle. The idea is that some people believe it would be unpatriotic to sign the book.
The flag in the pic is American but people from other countries can simply imagine the same scenario with their flag.
The idea of the showcase on the left side of the page of the above link is that you have to step on the American flag in order to sign the book. The "controversy" is that many people believe it's treasonous or disrespectful or un-American or un-patriotic to step on an American flag or even display it at the wrong angle. The idea is that some people believe it would be unpatriotic to sign the book.
The flag in the pic is American but people from other countries can simply imagine the same scenario with their flag.