Posted in NEWS Two mass shootings in three days. Are these copycat crimes? January 25, 2023 Suicides tend to occur in clusters that suggest contagion, but there is little evidence that murders or mass shootings follow the same pattern, experts say. https://www.latimes.com/science/story/2023-01-25/two-mass-shootings-in-three-days-are-they-copycat-crimes