May 3 is World Press Freedom Day, a day to celebrate the fundamental principles of independent media. But WPFD is also an opportunity to pay attention to where press freedom is under attack around the world–and the increasing tendency of those attacks to occur online. Bloggers and citizen journalists are arrested, jailed, and murdered for the words they write and the images they share; citizens are cut off from each other and from the information they seek because of what governments or companies deem appropriate for society.…