By WILL STEWART and MARIO LEDWITH
It was the first meeting of the new legislature since the West censured 'flawed' October elections in the country.
Four women from feminist grouping Femen, whose motto is 'We came, we undressed, we conquered', stripped naked except for black pants in temperatures of minus 3C.
Their stunt was an attempt to draw attention to alleged corruption in Ukraine, a country where the opposition leader and ex-premier Yulia Tymoshenko has been jailed for crimes not recognised in the West as punishable by prison.
Before being hauled away by police, the Femen protesters claimed parliament was a 'stable' for the 'horses of oligarchs'.
Inside parliament, the opposition nationalist Svoboda group chased and manhandled two MPs, a father and son, in a bid to prevent them taking the oath.
They were physically ejected from the chamber by opposition deputies who accused them of defecting to the ruling coalition.
The procedural wrangling at the opening of the new parliament threatened to push back a key vote on whether Mykola Azarov will be endorsed for a new term as prime minister.
The vote will be the first test of the support for President Viktor Yanukovich, who re-nominated Azarov.