Two days before Weizman, a professor at London’s Goldsmiths College, was due to fly to the US from Britain, he received an email from the US Embassy telling him that the visa waiver on his British passport had been revoked. When he went to the embassy in London last week, an official would only tell him that an algorithm had identified a related “security threat. That association could involve any aspect of his work with Forensic Architecture, which painstakingly pieces together evidence from a variety of sources when investigating human-rights violations and miscarriages of justice, often challenging the official versions of fatal events. – Artnet