After the horrific event of a mass shooting in the US, it takes time for details of the perpetrator to emerge. But without fail, their violent criminal record, any ties to radical extremism, the legality of weapons they used, and their mental health history are the first things scrutinized by the media, policy makers, and the general public.
However, one of these details is not like the others mental health histories should not be linked to a propensity to commit a mass shooting. There is no evidence that indicates a person with a mental health condition is any more likely to participate in senseless violence than anyone else. In fact, people with mental health conditions are more than 10 times more likely to be victims of violent crime than the general population.
They don't actually care about mental health; it's just a useful bit of misdirection to side track any kind of gun control debate.