Similarities In Gunman At Highland Park Shootings

The gunman accused of shooting up a Fourth of July parade in suburban Chicago is similar to the shooters in Buffalo and Uvalde. They are all lone-wolf attacks, and experts say they’re almost impossible to predict. Alex del Carmen teaches Criminology at Tarleton State University, says policing is becoming more data-driven. But even if there are red flags, he says the constitution still confines speech protection.