Every day, millions of online diarists, or “bloggers,” share their opinions with a global audience. Drawing upon the content of the international media and the World Wide Web, they weave together an elaborate network with agenda-setting power on issues ranging from human rights in China to the U.S. occupation of Iraq. What began as a ...

In August, the U.S. Treasury’s Office of Foreign Assets Control (OFAC) sanctioned the cryptocurrency platform Tornado Cash, a virtual currency “mixer” designed to make it harder to trace cryptocurrency transactions—and a worldwide favorite money-laundering platform. Americans are now forbidden from using it. According to the U.S. government, Tornado Cash was sanctioned because it allegedly laundered ...