Everybody has a history that traps them in a way, liberal democracy is a way of breaking out of the cultural trap and adapt to new social conditions and beliefs, the more of it you have the better you adapt. America is an imperfect democracy as is evidenced by the difference between the polices and laws and the polls on many issues. Russia was burdened with the legacy of the Czar's and Stalin, a psychopath of legendary proportions who left scares on the world to this day. The evil people like Hitler and Stalin do lives on after they die, but then again so does the good people do too.
Russian society never knew democratic rule or a free press except for brief periods and is still burdened by imperial thinking at all levels of society. They have had many hard lessons in history that they are currently repeating, the Ukrainians however appear to be breaking out of their history while honoring the important parts. They went liberal democratic and are fortunate to have the help of other liberal democracies, usually the smaller ones get crushed by someone like Russia who invades them or subverts and destroys their democracy.
The secret police keep the empire together and have since the time of the Czars, it used to be Vlad's job before he weaseled his way to the top. The secret police suppress political dissent, separatist or nationalist groups, except for Russian and they suppress political descent among Russians. Russia has a huge internal security force for a reason and it never changed much since the USSR.