At least six historically Black colleges and universities received threats or “potential” threats Thursday, prompting lockdowns and class cancellations. Southern University in Louisiana, Alabama State University, Clark Atlanta University in Georgia, Virginia State University, Hampton University in Virginia and Bethune-Cookman University in Florida all reported threats. Although initial threats have been investigated and lockdowns have since been lifted, some universities have opted to call off classes for the rest of the week or send students home. The abundance of caution comes a day after the assassination of conservative activist Charlie Kirk during an event at a Utah university and a shooting at a Colorado high school.