This has nothing to do with Liberal or any other form. They ALL want it, because the police is asking for it and to deny it, they will be called out on doing nothing against crime, be it terrorism, rape or whatever crime you can think of.
It is the easy way out for politicians. For the Police it is normal that they are asking for things that make their work easier. That does not mean it should be given.
I am sure that everybody has ideas on how to make their job easier. Does not mean it is always a good idea when you look at the whole.
e.g. Having no internet access will make the job of many network people a lot easier. Not always a good idea. Having no firewall will make their life also easier (bit more work for others) and also not a good idea.
Having a tag on each and every person 100% of the time and seeing what everybody does will make the job of the police a lot easier, but it is also not a good idea.
What would be needed are politicians that say "ok, when we don't do that 150 kids will be killed by terrorists and that is a price we are willing to pay for our privacy." I am not going to hold my breath for that.