https://en.wikipedia.org/wiki/Terrorism_in_the_European_Unio...
The issue is that it won't work. If you introduce mandatory backdoors into any commercial messaging system, it will not be used; the Bad Guys(tm) will simply return to using open source crypto, like pgp-over-whatever that we've had for decades.
I.e. if strong crypto is outlawed, then only outlaws will have strong crypto.
The intelligence agencies know this. Anyone pushing for backdoors in the name of counter-terrorism is either a fool or a liar.
Here, read and understand.
Any data to back that up? 9/11 was by far the worst and that was 14 years ago. Seems to me Islamic terrorism is hanging pretty steady at a 'virtually non-existent' level.
https://en.wikipedia.org/wiki/List_of_%28non-state%29_terror...
Besides, mass surveillance in itself is an attack on human rights, and as such not terribly useful for defending human rights. Maybe if it could avert millions of murders each year, we could talk about it. But with it averting nearly nothing, it's like cutting off your arm because you have an ink stain on your finger.
Personally, I'd rather die free than live surveilled. You can call me young and naive and say my principles just haven't had time to be challenged. I don't care. I stand by this completely and don't apologize for it. Freedom is the basis for a meaningful life.