The majority of the protesters are indeed anti-Russian and they see Russia as one of the main "bad guys", but I doubt that the majority are indeed pro-western democracy/liberal values etc...what they are pro/anti are simpler things:
Anti-government/anything related to the current regime
Anti-corruption
Anti-poverty
Pro-better life
Moreover, unfortunately the situation is much more complex than it usually portrayed in the Western media.
The "opposition leaders" Klitschko, Yatsenyuk apparently have very little control over the opposition movement on the streets which is being coordinated and sometimes even trained by extreme right. Although, groups like Pravy Sektor and their leaders, do not represent the majority of the protesters, they are young, organised, armed and take the initiative in the attacks on the Berkut forces, which makes them the true leaders of the opposition on the ground.
I also like how the western media, often fails to mention things like Auto-Maidan, and more "peaceful" actions by the "peaceful protesters."
Lastly, in my opinion Ukraine stands on a verge of a true civil war. It has been already going on a low heat as most of the protesters are from Central and Western parts, and a lot of the Berkut fighters are from the East. But now, as some of the leaders of East vowed to not allow these neo-Nazis spread into their territories, this "revolution" has the potential to truly divide Ukraine.
Cheers,
Fallen.