In the week after George Floyd’s murder, hundreds of thousands of people joined protests across the US and around the globe, demanding education, attention, and justice. But one of the key tools for organizing these protests is a surprising one: it’s not encrypted, doesn’t rely on signing in to a social network, and wasn’t even…

In the week after George Floyd’s murder, hundreds of thousands of people joined protests across the US and around the globe, demanding education, attention, and justice. But one of the key tools for organizing these protests is a surprising one: it’s not encrypted, doesn’t rely on signing in to a social network, and wasn’t even…