Edited sentence: According to the survey, conducted by Institut für Demoskopie Allensbach for the newspaper Frankfurter Allgemeine Zeitung (FAZ), "Nearly two-thirds of citizens are convinced that 'today one has to be very careful on which topics one expresses oneself', because there are many unwritten laws about what opinions are acceptable and admissible.Eurostat reported that 662,000 Ukrainians received EU residence permits in 2017, with 585,439 being to Poland.Since about 2015 there has been a growing number of Ukrainians working in the European Union, particularly Poland.The refugee issue is one of the most sensitive topics for the vast majority of respondents, followed by statements of opinion on Muslims and Islam.There are over 2 million Ukrainians working and living in Poland