Popular Russian anti-corruption crusader Alexei Nayalny was the person who coined “The Party of Liars and Thieves” as a euphemism for United Russia and made this speech.
He was arrested shortly after making this speech.
His wife Yulia posted on his website that he was arrested and first held at the police station Северное Измайлово (Izmailovo). Later he and several others were transferred to the station at Китай-город (China Town).
The popular political blog has been silent since his wife’s post. http://navalny.livejournal.com/