I'm no fan of the BBC and have in fact had several disputes with the organisation.
It is, however, a large and disparate organisation and it's meaningless in my view to state that the BBC describes Ukranian protesters as 'pro-Democracy'. I trawled through the most recent comments of half-a-dozen BBC news outlets including Today, PM and found that they described the protesters most often simply as "protesters", twice as "anti-government protesters" and once as "violent protests". I did not find any reference to "pro-Democracy protesters."