Omertà (/oʊˈmɛərtə/, Italian pronunciation: [omerˈta])[a] is a Southern Italian code of silence and code of honor and conduct that places importance on silence in the face of questioning by authorities or outsiders; non-cooperation with authorities, the government, or outsiders, especially during criminal investigations.
Just googled what 'Omerta' means:
Omertà (/oʊˈmɛərtə/, Italian pronunciation: [omerˈta])[a] is a Southern Italian code of silence and code of honor and conduct that places importance on silence in the face of questioning by authorities or outsiders; non-cooperation with authorities, the government, or outsiders, especially during criminal investigations.