On some level, I have to wonder why, with the amount of missile defense platforms & SAM/AAM tech deployed around the world, it is apparently not feasible to shoot #Tiangong1 down over the ocean or a desert.
Anyway, this is irrelevant, pretty sure there's no space junk under the Karman line, feel free to correct me if I'm wrong. Larger issue is how do we clear the existing junk in low orbit, but deorbiting safety is a pretty big deal too.