Democratic Tsunami (, ) is a Catalan protest group advocating for a self-determination referendum in Catalonia, formed and organized in the lead up to the final judgement on the Trial of the Catalonia independence leaders. It organizes supporters of the Catalan independence movement through the use of social media, apps and other online resources. It used a 'bespoke' Android app, along with a Telegram account with over 410,000 followers in order to mobilize and organize demonstrations during the 2019 Catalan Protests. Distributed outside of the official market for Android apps, the application (making use of overseas servers) infringes the European legislation for data protection in regards of geolocalization.