This tool is designed to help you hold state policy-makers accountable for police violence. It uses data on police killings that have happened from January 2013 through April 2016. You can use the tool to compare U.S. states to identify which states have the highest levels of police violence. You can also see how police violence disproportionately impacts black people in many states. In doing so, we hope you will be better equipped to hold policy-makers accountable for changing the policies and practices that make their states more likely to threaten black lives. And after you've explored this tool, click here to learn which police departments bear the most responsibility for this violence.