Following the death of a Miami Beach teenager, questions are being raised over the safety of Tasers, the New York Times reports. According to the Miami Beach police chief, Israel Hernandez-Llach was tagging a building with graffiti when police Tasered him. A 2011 Department of Justice report found that Tasers are considered safe for most people, and said deaths are often the result of pre-existing medical conditions. There is no ruling yet on the official cause of the teen’s death.