If you have any doubts about whether you have special circumstances, seek legal assistance. Additionally, there is a difference between what you are legally entitled to do in a theoretical sense, and what the police on a particular occasion are going to let you do. The police act under the orders of their commanders, who in turn get their orders from others, higher up in the government. In such circumstances, remember that the police carry automatic weapons, clubs, tear gas, pepper spray, and other lethal weapons. They are trained in crowd control, are often in good physical shape, may have beat people up in the past, and regularly arrest people and book them into the jail.
Personal safety is therefore paramount.
Think about it before you insist on vindicating your rights. To download using Netscape, hold the shift key and click on this link. Using Internet Explorer, click on link, you should get an option to save to disk. Access in both Netscape and Explorer. You can click on the link and download the document.