So far, no one has been arrested for publishing html code with political content. The web site pages you are looking at are no different than pages in a pamphlet, journal, or a book. This should be protected by free speech laws.
Some of the possible actions are described in such a way as to minimize possible legal consequences. For example, the section on the Fax Jam offers advice on how to avoid certain outcomes.
Consequences for some of the possible actions are not known as they are actions that have not been used often before within a political context such as this one.
To play it safe, only engage in actions you know are legal. Or engage in actions using an anonymous pseudonym. An anonymous free email account is analogous to the Zapatista ski mask. Free email can mask your identity.
Some people with advanced computer knowledge will think the actions suggested on these pages are too simplistic and not very effective. If you are such a person, don't criticize, get busy.
Finally, if you don't know what you are doing,
then don't do anything. Pass this URL on to someone who does.