They need a warrant if they're going to record and track my movements over the course of months.

If they're only tracking your movements in public, the no they do not. Again, you're just wrong about what privacy laws protect. They do not prohibit the police from surveilling or tracking you, they only control how the police is able to conduct that surveillance. If the police want to search your house or car, they need a warrant or at least probable cause for the latter. If they want to photograph you in public, they do not.