UMass Lowell Emily Greene-Colozzi (IMAGE) University of Massachusetts Lowell Caption UMass Lowell criminologist Emily Greene-Colozzi is studying the effectiveness of so-called Red Flag laws to prevent mass shootings. Credit UMass Lowell courtesy photo Usage Restrictions None License Original content 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.