Isolated videos or audio files of „strange sounds“ can generally be regarded with a grain of caution, especially if there is only one recording of an occurrence of the event in one location. However, the latest case from Poland is below:
-Two weeks ago, Google censored the Youtube cannel of the Polish government. Censoring an entire country, is a new level and again illustrates the blatant double standard. Google does not even censor totalitarian governments (for instance Saudi State television: Saudi Arabian family therapist explains how to beat your wife properly).
Judge for yourself whether you find anything factually incorrect in the Polish immigration video:
Then, the EU again showed their totalitarian principles as they announced to sue the Polish government for not adhering to „European values“. Or in other words: Poland refuses to accept million of unveted migrants, most of which are illegals even by EU law.
And then again, strange sound were heard over Poland: