Ukraine protests: Anger and frustration spark Kiev demonstrations

There is tight security in central Kiev as opposition parties hold a series of demonstrations against the government this week.

The head of Ukraine's national police force quit on Monday, accusing politicians of interfering with the police’s work.

And Mikheil Saakashvili, who was once the President of Georgia and is now a politician in Ukraine, has accused Ukraine’s government of giving up on reform.

Tom Burridge reports from Kiev.