A gunman killed at least eight people at a shopping center outside of Dallas, Texas, before he was fatally shot by police at the scene. Witnesses describe seeing the shooter and walking past the bodies, including those of children. Video footage from outside the mall in the city of Allen shows the moments of panic as shots were heard inside the building. Mass shootings have become common in the US, with at least 198 so far in 2023, the most at this point in the year since at least 2016, according to the gun violence file. The nonprofit group defines a mass shooting as any in which four or more people are injured or killed.