Mass shooting contagion is when one shooting inspires others to do the same. It's like when you see your friend doing something and you want to do it too because you think it's cool, even if it's not a good idea.
People who commit mass shootings often feel angry, frustrated, and like they have nothing to live for. When they see other people committing similar acts and getting attention for it, it makes them feel like maybe they could do the same thing and get attention too.
It's like when you see your friend getting lots of attention for doing something silly, and it makes you want to do something silly too to get attention.
To stop mass shooting contagion, we need to make sure that we don't give too much attention to people who commit mass shootings. We also need to make sure that people who might be feeling angry or frustrated get help before they do something dangerous.