Sorry, I am not impressed. The fact is that the opposition has allied with some extreme parties. What effect this will have in the future is far too early to say, or to quote dr Szamuely, who is an expert on Russia and definitely not a "leftist":
Nor must we forget that among the many disparate opposition groups there are some very nasty ones and, at this stage, we do not know how much power or influence they will have.
Russia Today anchor quits live on air over Putin whitewashing
http://nypost.com/2014/03/05/russia-today-anchor-quits-on-live-tv-over-putin-whitewashing/