That's a very different situation. For one, that's a first party request; I can refuse (in some states, in some circumstances). A license also can't contain private information; it's a physical manifestation of information that a person willingly surrendered to the government.
There's a huge difference between a cop asking a single person for their ID, and dragnet surveillance of people with a particular viewpoint.
There's a huge difference between a cop asking a single person for their ID, and dragnet surveillance of people with a particular viewpoint.