Police and Black Youth (IMAGE) Johns Hopkins Medicine Caption After reviewing 40 years of scientific studies looking at the impact of police contact with Black youth in numerous environments, Johns Hopkins Medicine researchers concluded that such exposure may be detrimental to the health and well-being of this group, including negative outcomes such as sadness, hopelessness, anger, fear for safety and stress. Credit Public domain image Usage Restrictions No restrictions. License Public Domain Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.