"We must defend Polish churches, we must defend them at every price," Jaroslaw Kaczynski said, drawing condemnation from the opposition who accused him of "inciting civil war."
Since the populist party, Law and Justice, won power in 2015, it has taken control of almost all state institutions, except the Human Rights Commissioner's office but that could soon change.
Dissent by the small United Poland party prompted its larger partner Law and Justice (PiS) to warn that the ruling coalition was crumbling.
You might think Poland's far-right will flock to support incumbent Andrzej Duda. But it's more complex than that.
Since the death of his twin brother in a 2010 plane crash, Kaczynski has been the main force behind the Polish nationalist right. But is his influence beginning to wane?
The city of Gdansk was presented with the Princess Asturias prize for concord nine months after Pawel Adamowicz was killed
Final results from Poland's parliamentary election on Sunday showed the ultra-conservative Law and Justice (PiS) had won a narrow majority in parliament.
Marek Kuchcinski from the ruling PiS party said he would resign after it was revealed that he used government aircraft for private trips by family members.
Around 200,000 people, including Poland's leaders and nationalist groups, marched through Warsaw on Sunday to mark the 100th anniversary of Polish independence.