Maybe. If there is no reasonable way to safely move the sensitive material to someplace safe. Of course, the set of situations ever where that would be the case and it would be even practical to destroy the material rather than abandoning it to effect a safe retreat is really stunningly narrow. You can construct highly-contrived scenarios, but...
So, we actually do know that the 2nd precinct never came anywhere close to falling. The question now is whether they’re lying about destroying evidence maliciously, or lying about having panicked.
The police are fundamentally different from the US Marines in almost all ways, in practice and in reality.
My position is that there is NEVER a situation where it makes more sense for the police to devote manpower to destroying evidence over restoring order. Police agencies shredding files on the way out the door are, historically, not doing it to protect anyone but themselves.
Either way, it’s pretty clear that Precinct 2 never got anywhere close to such a convoluted hypothetical. That leaves the question why they did it, to which I believe the Roman jurors said it best: cui bono?
The issue is that a lot of us don’t think that that precinct was in any actual danger of falling.