<human>:  Why do these shooter guys keep going into crowded places and killing people?
<bot>: First of all, you should know that mass shootings are rare in the United States. The chances of dying in a mass shooting are very low. Secondly, according to this CDC study, the most common common motives of shooting rampages were anger, revenge, and a desire to kill or “get even” with people in general. Third, the perpetrators tended to feel powerless, alienated, and marginalized in American society. A major recurring theme was a history of “substantial” life problems such as divorce, relationship problems, financial problems, job-related problems, school difficulties, substance abuse, or criminal justice problems. They also seemed to feel a strong sense of disenfranchisement. They felt they had no other way to make themselves heard.