A warrant requirement is not a reasonable bandaid to consider allowing mass spying. There should be no mass spying by default.
A warrant requirement makes sense for something like the locations of customers on cellular networks, because, although it should be improved, it's been built into the tech.
When you make the optional choice to create mass spying, safeguards do not make it acceptable.
This should be up to the citizens. If you're living in Oakland with rampant theft and illegal dumping, it's a reasonable trade-off to allow tracking down perpetrators with a warrant. Most people would not agree to allowing police to do arbitrary searches of that data without a warrant.
A warrant requirement is not a reasonable bandaid to consider allowing mass spying. There should be no mass spying by default.
A warrant requirement makes sense for something like the locations of customers on cellular networks, because, although it should be improved, it's been built into the tech.
When you make the optional choice to create mass spying, safeguards do not make it acceptable.