South Carolina has passed a law requiring subversives to register themselves. Kansas has pass a drug tax stamp laws (as has Alabama, Connecticut, Georgia, Idaho, Indiana, Iowa, Kansas, Kentucky, Louisiana, Massachusetts, Minnesota, Nebraska, Nevada, North Carolina, Oklahoma, Rhode Island, South Carolina, Tennessee, Texas and Utah). The thing about all of these laws is that they require the person to expose themselves to a "real and appreciable" risk of self-incrimination. Back in 1969 Leary v The United States showed that the Marihuana Tax Act was unconstitutional because it violated the 5th amendment.
I'm not sure that there is anything better that anyone could do with their time than to find laws like these, get arrested for them, and then prove that they need to be removed.
Also I think that making laws like these is eroding the meaning of the Constitution, thus subverting the American Government, and there for I think all the people who wrote these laws are subversives.