More than 10,000 Romanians on Saturday protested against legislation passed by Parliament which critics say will make it harder to prosecute crime and high-level corruption.

Protesters briefly scuffled with riot police as they massed in Bucharest's University Square. Protesters shouted: "Thieves, thieves!" The demonstrators will later march to Parliament.

There were smaller protests in the cities of Cluj, Timisoara and Iasi. Protesters began arriving earlier in the capital by train from other Romanian cities and were greeted by people waving Romanian flags.

Last year, Romania saw the biggest protests since communism ended after the left-wing government tried to decriminalize official misconduct.

Parliament last month approved amendments to laws that many say will lead to a backsliding on its anti-corruption fight.

Prime Minister-designate Viorica Dancila supports revamping the judicial system. She is an ally of Liviu Dragnea, chairman of the Social Democracy Party, who can't be premier due to a conviction for vote-rigging.