I'm very curious to see you discuss this at more length. What do you mean by "left and right are reversed" in Russia? And how is Kasparov "radical?" I'm genuinely curious to know what your thoughts are about this are.
SiberianTiger's answer about "liberal" and "conservative" is interesting, as is the link to "left" and "right".
I remember after the end of the Cold War when the American news media, which is biased leftward, started referring to the old communist hard-liner Russians as "right wing".
"Right", of course traditionally referred to those who lean towards fascism, while "left" refers to those who lean towards communism.
By that definition, the communist hardliners would be left-wingers.
But the American media thinks of themselves as left-wingers, and didn't want to associate themselves with the mean old dictator guys, so they decided to, as they have done many times before, re-define the meaning of right and left:
Now "right" means anyone who is mean and dictatorial and un-enlightened, etc., and "left" is anyone who cares for the poor poor people and is good and clean and happy and feeds baby birds and reads to blind kids, while drinking Starbucks products (1990s vintage, of course).
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BTW, the news media pulled another fast one in the 2000 presidential election coverage, when they invented the whole "blue state / red state" thing.
USA Today's famous map depicted Republican counties or states in red graphics, while Democrat areas were colored blue. Since the Democrat Party is a left-leaning party and is idealogically slightly closer to communism than the Republicans, you would assume the Democrat states would be colored red.
USA Today did a smashing job of skewing the whole "red = communism" thing and changed the whole way people think of the subject.
Reminds me of something I read by George Orwell, about controlling language and how it is effective at stearing thoughts.