Yes, it's a ballsy logo, but on the other hand... Wikipedia tells us that NROL-39's payload is actually a Topaz synthetic aperture radar (SAR) node, flying in constellation with two others already in operation, and two more to come. This is essentially not-at-all-threatening to civil liberties, being a ground-elevation mapping platform (and to a second order, some degree of surface roughness), of not particularly goo…
If there was Wikipedia in 1974 it would have told us that the Glomar Explorer was built to mine manganese nodules from the ocean floor.
http://en.wikipedia.org/wiki/List_of_NRO_Launches
This is an intelligence mission, it's just one of the least sinister of all the intelligence missions that can be performed from space. We are performing those missions - just not on this launch.