Stripping my site URL, and searching for the term "/?q=Save+Us+From+Berlusconi" on Google shows up this blog post written way back in 2009: http://www.seroundtable.com/archives/021647.html
My site is facing something similar.
What should I do? Is this really a bug from Google? It looks like Berlusconi is the prime minister of Italy; however my site has nothing to do with political stuffs. I see there are a couple of threads in Google forum -- older ones -- that talk about this strange query indexed on Google.
Check the second URL.