[kelnos]

I wouldn't be fine with that, but:

1) I would at least have a chance of knowing about it, and could lodge a complaint with the relevant agency, or take them to court, if necessary. This may not work, but there's at least some level of recourse and accountability.

2) The chilling issue is that of mass surveillance. The kind of surveillance you describe is time- and resource-intensive, and doesn't scale. If agencies can collect and analyze data on a vast number of people with a few clicks of a mouse, that's a danger to everyone's freedom.