Pro-Russian separatists shoot down a Ukrainian transport. Ukrainian protestors turn over a few cars at the Russian embassy in response. The latter is an outrage.
One is a military act against opposing armed forces in a Civil War.
The other is a Diplomatic Incident. The government is responsible for the safety of diplomats within its country. To not do so has been a cause for war for CENTURIES...
That you don’t, or refuse to see the difference reveals much.