Here's a long list of terrorist incidents, some of which were pre-emptively disrupted by the FBI:
https://www.fbi.gov/stats-services/publications/terrorism-20...
> Even if they were able to catch every crime before it started, ala minority report, they, based on past behavior, would most likely seriously abuse that power hence the strong opposition here to having them even come close to posessing that power.
I don't really understand your point. I'm not arguing that they won't abuse their power. They will. They always do. The question is whether or not the abuses that might occur as the result of analyzing publicly available information are worse than the harms that might come from not doing so. I come down pretty squarely on the harms from not doing so being greater, but reasonable people can disagree, I suppose.