Gathering data has NO USE in prevention. Because algorithms CANNOT differentiate between keywords in sarcastic/trolling communication vs. serious. And in serious communications, the keywords would be replaced with mundane words. I mean, even in regular communications, when you don't want people around you to know the details, you will omit them or rephrase somehow that only relevant people understand. Perfect example is a discussion from Analyse This containing "that thing" and "the other thing".
Their gathering agenda fulfills 2 roles: blackmails (whether on employee or company agenda) and "reports". I see no use for anything else. Either way, you need to already be on their agenda for them to use it against you, most likely "after" an event, which for suicidal attempts is USELESS. They can't do it again, to justify "prevention".
And financing such roles, nobody will publicly admit it (especially since "reports" are for justifying finacing).
So somehow they need to disguise it for "the people". ("An INDIVIDUAL is smart, but people are dumb and panicky!", M.I.B.)
Oh yeah!...."Intelligence", "Security", are just like "quality" in corporate enviroment: it just means extra things were written because anyone is expendable and new people lack knowledge. Nothing they do reveals their keywords. On the contrary, I would say creates enemies.