Are you against spying on, say, white supremacists who you know are plotting terror attacks on minorities?
Besides the definition of what constitutes a "white supremacist" has been getting more ambiguous by the minute over the past few years. Nowadays it pretty much just means "anyone who doesn't like illegal immigration" or "anyone I don't like, but I'm too lazy to articulate why".
I'm not in favor of surveillance panopticons either, for what it's worth.
Still, that's very few events, which supports my point. It's basically a more potent "think of the children" trojan horse that routinely gives the government even more power (and potential for abuse) through harebrained and ineffectual laws. See e.g. the current FISA abuse scandal where the FBI _falsified the supporting documentation, and knowingly supplied fake documentation to the court_ to spy on a presidential campaign. Had it been you or me they spied on, nobody would even know.
Again, I agree with you that domestic extremism (be it white supremacist, Muslim, or Black Hebrew Israelites) should be countered through ordinary policing, rather than building the Stasi's wet dream.
Your post is similar to if I proposed a hypothetical about addition using apples, and you posted a screed about how apples are overused in American cuisine and their nutritional value is suspect, especially relative to oranges and pears.
Just the other week I saw the news that until recently we had 300 (!) Saudi nationals training to fly planes right here in the US. Software won't help us with stupidity/sabotage of this magnitude.
https://abcnews.go.com/Politics/navy-suspends-flight-trainin...