It is all cataloged and it involves a limited geographic area in this case. The image analysts deal with this stuff every day and it is totally computerized. Just what, in your mind, does the amount of data have to do with solving these crimes?
Get real and quit spouting this nonsense ...
Just what do you think we should do with those images if they exist and can be helpful? Get a life, buddy.
They don't exist, and nothing what you fantasize about existing, exists.
There's no continuous satellite-movie record with detail showing individual vehicles of the entire DC Metro area that some tech can go in and click and zoom on each shooting scene and watch a little movie of each shooting. That's from Hollywood, not reality.
In reality, there are a very limited number of satellites, and they're in low polar orbits, such that over any given point there's only one overhead for a few minutes a couple times a day. And there's a tradeoff between detail and area coverage; for EACH of those passes, the satellite techs, BEFOREHAND, have to decide what small area to image (not a movie, a still image.)
For what you want you'd need several million spy satellites.