i too would want such people nailed. however, if you have any kind of brain on your neck then its obvious that to plan and succeed in such an attack, thelast thing youd do is use the internet or mobile phones to communicate. there was no internet in the times of the troubles and hardly any mobiles.
as an example. greece has had its health service drastically cut. imagine if next year the government here did the same and you wished to set up and organize a protest group. if this law goes through then your ability to organize and comunicate securely will be removed. any dissent will be monitored and probably removed. this law is an attack on free speech. the law isnt temporary, weve managed fine without it uptill now.
monitoring your private emails and phone calls will not stop child abusers or terrorists. it will ust make them go further underground and harder to catch.