After a march in which protesters denounced the "lies of the media" the priest yesterday recited an exorcism prayer before the newspaper's ultramodern headquarters, an AFP journalist reported.
The protesters arrived at the building with an icon of the Virgin Mary and a sign reading "Rosary crusade for the Motherland". They were greeted by a flurry of leaflets which included cartoons defending freedom of speech.
A large banner hung from the Gazeta Wyborcza building read "Constitution without censorship".
The eurosceptic PiS party has plans to overhaul state media and at the moment has the Constitutional Court in its crosshairs.
Kaczynski lashed out at the country's top court yesterday, accusing it of trying to block government policies in an escalating row over which judges can serve on the bench.