Anonymity is also crucial for democracy. Anonymity is required for sources to leak material to the press about corruption and malfeasance. Anonymity is required for people to speak honestly and freely. When the government turns against its critics, anonymity is required for those critics to speak safely.

You can still investigate crimes without eliminating the right to privacy or anonymity. It requires talking to people, finding witnesses, and doing good old detective work. The simple fact of the matter is that police have more tools today to fight crime than they ever have in human history. All of our communications, our phones and CCTV tracking our every move, etc yet crime still happens. Most crimes go uninvestigated and unprosecuted despite this wealth of invasive access. The reason for this is either lack of will or lack of resources, but it surely isn't lack of access. We were told if we traded our privacy and liberties we would be safe from crime, but the truth is that criminals will still crime and rich and powerful people will still get away with crime. The only difference now is that we lost our freedom and privacy along the way. And every day, we are told we need to give up even more freedom and then really, truly, the system will find those bad guys and eliminate them. Except the bad guys are often the ones who run and benefit most from the system. And they've gone so far to convince much of the population that doing things privately (like making transactions) is in and of itself a sign of criminal behavior or intent.

People 100 years ago in the US would scoff at the idea that the government would be able to monitor every financial transaction they made or read all their mail. Yet all day I see people in these comments saying how this is normal, needed even, for society to operate well.