You're commenting under an article that explicitly says how US intelligence agencies and police get around the need for warrants. Many rights in the US are more theoretical than practical if someone in power decides so.
Also, there are strong expectations of privacy in the EU, as well as due process, warrants, etc. There are of course abuses, and especially "terrorism" can enable some shortcuts (to be fair, often for very good reason multiple EU countries have had tens to hundreds of dead from terrorist attacks that could and should have been prevented), but I don't have the impression it's in any way even close to as bad as the US. Do you have any information/sources to the contrary?