An estimated 50,000 Poles have protested in Warsaw against the new conservative government's bid to appoint loyal judges to Poland's constitutional court. Similar marches were held in other Polish cities.
Protestors in Warsaw walked from the court's building to the presidential palace, accusing President Andrzej Duda of breaking the law through his refusal to inaugurate three judges nominated by the previous liberal government.
The new government led by the eurosceptic Law and Justice (PiS) followed its landslide in October by appointing five replacement judges without awaiting legal appeals, saying the move would rebalance power in the 15-member panel.
Duda is an ally of the new government. PiS leader Jaroslaw Kaczynski recently said the existing court was a "stronghold of everything that's wrong with Poland."