PRAGUE (AP) — The biggest anti-government protest in Prague since the 1989 pro-democratic Velvet Revolution is underway as Czechs urge Prime Minister Andrej Babis to resign.

Protesters came to the capital from all corners of the Czech Republic to attend Sunday's demonstration, the most massive of recent street protests opposing Babis.

The demonstrators see the populist billionaire as a threat to democracy, including the independence of the country's legal system.

The protesters also are demanding the resignation of Babis' new justice minister. They say the minister might compromise the legal system as prosecutors consider whether to indict Babis on fraud charges involving European Union funds.

Babis denies wrongdoing and says there's no reason for him to resign.