Acts of vandalism targeting the Polish saint have been multiplying in the last year in his home country.
So far, nothing is known about the perpetrators of these acts of vandalism but an investigation is ongoing.
The victim was taken to hospital. He made a complaint to the police.
The banner contained a sentence saying "home abuse is not tradition."
These two statues have already been targeted several times. In 2013, vandals cut off the arm of the statue depicting Reagan.
The institution was founded by a Polish NGO
The beatification of John Paul II took place on the 1st of May 2011 and he was canonised on the 27th of April 2014.
About 150,000 people participated in the canonisation of the saint known as the "Secretary of Divine Mercy."
Pope Francis expressed the conviction that the Polish Pope played a decisive role in the fall of the Berlin Wall.