Ignorance isn't bliss
A liberal who knows the Russian system very well and loved today by millions of Russians, whose name is Garry Kasparov can let you in on some of the things you likely believe is fine when you defend the Russian government.
Free speech - Does not exist in Russia
Freedom to assemble - Does not exist in Russia
Free and fair elections - Does not exist in Russia
You get the idea... so many values the west holds close doesn't exist at all in Russia.
What does exist in Russia?
Government thievery--when you have a great idea (unless you're already wealthy or part of the system), the government will take your idea, give it to one of their buddies... kick you in the balls and send you to work in a factory to tighten bolts.
Poverty--Most Russian families still do not live in nice homes with yards.
Like your car? Likely wouldn't have one in Russia. If you did, it would have all the features of a cheap Volkswagen.
Widespread dissent. Despite what most people are lead to believe... Putin isn't regarded highly by the working class.
So MI5 and FBI are spying on their own citizens... I have yet to hear a story where they are tossing people in Jail or taking away money and someone's livelihood because they spoke poorly of Nancy Pelosi or Chuck Schumer.