Not quite true. There are a finite number of markers, and when mixed, with a common ingredient, there is a near 100 percent chance that the individual will commit an act of physical violence in their life time.
Mass shooters are of two varieties:
The political jihadist (who is a bit difficult to profile)
Those who fit a certain profile with a finite number of markers that CAN be identified and dealt with before they commit an illegal act. The solution is a civil intervention and does not involved any contact with criminal actions.
I specifically said "These mass shootings are
USUALLY carried out by lone, mentally disturbed, crazed madmen lashing out"
Please review the list of US "Mass Shootings". You will find I am correct.
Those who fit a certain profile with a finite number of markers that CAN be identified and dealt with before they commit an illegal act. The solution is a civil intervention and does not involved any contact with criminal actions.
So who do you give this power to? And who gets to determine those markers? Could being a Trump Supporter be one of the markers? Most on the Left would say "absolutely".
What happens if someone fits too many of those "markers"? Are their guns then automatically confiscated even before they commit any crime? (That would sure please the radical left!). What happens when radical Leftists gain control of the WH and Congress and decide to manipulate those markers so that ALL Gun Owners are considered "dangerous"?
While all are tragedies, the small number of "mass shootings" and the infinitely small number of lives lost vs the total population is probably not worth giving additional powers to government that could be abused. Every time you hand over powers to the government, you open an new can of worms that can be abused.
While the intent is good, and it might even stop a mass shooting occasionally, there is a definite danger to freedom also associated with handing the government the power to limit our Constitutional Rights by profiling. And like taxation, once a precedent is set, it's all too easy to be extended like the tentacles of an octopus.