Hong Kong Protesters Use Umbrellas, Lasers, and Respirators to Evade Surveillance and Teargas. Reason. Geraadpleegd op 10 August 2019. “Street protesters have found cunning ways to avoid police surveillance. By using umbrellas to shield identifying features from CCTV cameras—and in some cases using lasers, to fully derail image-capturing abilities—they have kept themselves safer from retribution.”
