...invaded Georgia (not just the disputed territories of Abkhazia and South Ossetia but attacked the port of Poti on the Black Sea, which was situiated in Georgia "proper"
...destabilised, for many years, the Moslem region of Adjara in Georgia with false flag operations
...allowed their proxy forces in Ukraine to shoot down (mistakenly no doubt) a civilian airliner with a missile supplied by their army for the purpose
..launched cyber attacks on Lithuania and Estonia
..masterminded and carried out the largest known state-sponsored drug taking operation in history (probably exceeding E Germany's in range, if not in duration)
...murdered a British citizen of Russian background in London, leaving a potentially deadly trail across the capital (and indeed on at least two civilian aircraft)
And so on
You might just as well ask: "why are the police manhandling those unfortunate bank robbers" :-)