There was a credible threat in what he said and posted on FB. They could have done a knock and talk to judge if he was serious or just talking trash.
If the police believe they had someone who was a danger to himself and others to implement whatever version of the baker Act that Florida has.
He wasn't allowed on campus with a back pack...teachers were told when he was attending there to "keep an eye on him".
As I said before this could have been prevented before it ever happened...but everyone swallowed their tongues.
How far are you willing to go with preventive detentions and confiscations? Since a judge would not have been available immediately for a hearing, should his guns have been seized preventively until a hearing, and any appeals from that hearing, could be held?
What about some of the folks here who have done things like posting pictures of people being executed by hanging to make their point over what they think should happen to be FBI and DOJ people who were involved in the Trump spy fiasco? Is that a sufficient threat against government officials that would justify preventively arresting them and seizing their weapons, and then having a hearing on whether they are enough of a danger that they should be permanently disarmed?
What about an online discussion forum that countenances that sort of stuff?
It’s very easy to state the concept in the abstract and after the fact; it’s a lot harder to draw up the rules to apply prospectively, before anything has happened.