Protesters overturned cars, smashed windows and ripped up the Russian flag outside the Russian embassy in Kiev on Saturday.
More than 100 protesters demonstrated against what they called Moscow's backing of separatist rebels in east Ukraine, witnesses said.
The Russian foreign ministry called the lack of a police response "a grave violation of Ukraine's international obligations," demanding that Kiev take steps to ensure its diplomats' security.
The protest followed the deaths of 49 Ukrainian servicemen on board a military transport plane that was shot down by the separatists early on Saturday.
More top news
A "lost" Beatles record that was found after being missing for more than 50 years has sold for £18,000 at auction.
Police have confirmed a 26-year-old man from Cornwall has died at the campsite area of the Cheshire festival.
Downpours keeping us on our toes today