On the assumption that the perpetrators are actually Polish that is...plenty of Albanien,Czech,Slovakian,Slovenian,Lithuanien,Russian, to name some, Wiktor, I for one am happy to see you post here, you can't be held responsible for the bad eggs from your country any more than I am for the bad eggs in my country.
This is symptomatic of lax government,unregulated immigration and the bloody interference of sodding Brussels and Cherie tossing B.Liar and her human rights cobblers. Sorry all, wine finished now, bloody immigrants must have nicked it...joke!