Or for that matter simple logic. If Ukraine was interested in attacking Russian civilians en-masse the same way as Russia attacks Ukrainians, they would have killed thousands of Russian civilians by now. Instead, e.g. Ukrainian drones are exclusively targetting military, infrastructure, or otherwise very specific targets (e.g. intelligence related). There's nothing to gain from stirring up a revenge sentiment against Ukraine (for Ukraine that is).
Without other context I would have guessed islamists but the timing suggests false flag (and the Kreml has a history of that) to enable greater mobilization in Russia.
