The beeb has an article on it, taking a very negative view of that law
http://www.bbc.co.uk/news/world-europe-42920934
Holocaust law wields a 'blunt instrument' against Poland's past
In 2012, Barack Obama made an uncharacteristic gaffe that set off a small diplomatic crisis - he referred to the "Polish" - and not "Nazi" - death camps of the Second World War.
For Poles, it was an acutely painful faux-pas. The nation has for years objected to the term "Polish death camps", saying it implies complicity in the Nazi camps built on its soil during occupation.
President Obama swiftly apologised, and a personal letter to Poland's then president Bronislaw Komorowski was enough in that case to paper over the diplomatic crack.
But under a bill passed by Poland's lower house of parliament this week, someone using similar language in future might be prosecuted. Put forward by the ruling right-wing Law and Justice Party, the bill would make it a crime to accuse Poles of being complicit in the Holocaust, punishable by up to three years in prison.