In fact, French and Russian security services are known for their heavy touch. Fat lot of good it's doing for them.
Too bad it smells like a conspiracy theory.
Edit for source: http://www.dw.com/en/france-arrests-islamic-state-supporter-...
I believe it was LA that had a plane fly above the city and record 24/7. It was just enough resolution to make out cars and people, but not identify anyone. Less invasive than security cameras in that sense. And I don't think it was live. It was just something the police could go back to and look at after a crime as committed, and see where the criminals went or came from.
Given some conditions, like the recordings be deleted after a few days, and that it requires a warrant to look at, I think that would be ok.
Apparently this method is not working at all.
There isn't any time that would be less effective for your goals than right now.
Also, it's like 'teen abstinence' sex ed - you can tell people to refrain all you want, but they're still going to do it. People want to talk about this thing as it's happening; they will find a place to do it regardless.
But we need to do so with sensitivity, too, now.
Edit: I'll go with jacquem's reply to NewNole2001: It can wait a day or two. It can't wait weeks, though. (The Patriot Act was passed less than 7 weeks after 9/11.)
It is our duty to keep our heads cool and minds clear. When the smoke has cleared - then we will grief.
Governments kill way more people than terrorists ever will, but fear those the government tells you to fear...
An attack of this size and coordination was without a doubt electronically communicated. We can't possibly infiltrate every group of radicals with informants. And they are not going to stop.