While smart phone videos taken by ordinary citizens have changed the conversation about policing in the US, it is important to know that there are privacy issues you should be aware of when taking your smart phone to a protest. Digital surveillance tools, including facial recognition technology, can be used to identify protestors and monitor their movements and communications. Furthermore, investigators and prosecutors have come to view protestors phones as potential treasure troves of information about them and their associates, setting up legal battles over personal technology and Americans’ Constitutional rights. And while protesters are within their rights to take pictures and video at protests, the images they capture could lead to unintended consequences for participants.