Interested in good policing? Come and participate in a day-long hackathon and explore data science models and D3 visualizations to help the efforts of the Citizens Police Data Project. You'll be helping to support a national model of transparency and accountability for police actions. You'll collaborate with like-minded individuals on a project in one of three broad areas:» Data Visualization: Using d3, Gephi, and any other visualization tools, create a compelling and informative story. » Data Science: Create a propagation model to understand the impact of reassigning police officers. » Data Engineering: Add functionality to ResponseBot, CPDP's chatbot.