School (in)Security is our biweekly briefing on the latest school safety news, vetted by Mark Keierleber. The Justice Department announced Tuesday it would investigate Des Moines Public Schools to determine if it engaged in race-based hiring. In 2021, the district’s former human resources manager said that out of Des Moines Public Schools’ 4,000 staff members, some 400 were Black. | Fort Worth ReportThe Los Angeles Unified School District faces accusations that its social media policy, which allows educators to ban parents from campus for making threatening or racist online comments about school officials, violates the First Amendment. | The Associated PressA Michigan school district, where four elementary school girls said they were groped by a classmate on the playground, is accused of waiting eight days to report the incident to the police.