With a population of approx. 33,000 people Ukrainian minority in shorten as a result of administrative reform Olsztyn province was a long time the subject of intense operational activities of the local security apparatus. The efforts of the secret political police coordinated within the framework of the so-called. case object, code-named “Beskid” which continued until January 1990. It places special emphasis on the control of the Ukrainian Socio-Cultural Society (basically the only official organization of the Polish Ukrainians), cell Ukrainian student movement, education institutions with the Ukrainian language of instruction, the Greek Catholic pastoral and contacts with the Ukrainian diaspora in the West. The measures taken most often justified the need to “protect” the Ukrainian community against the “nationalist activity”, that efforts to stem the polonization and strengthen their own cultural identity, which was accompanied by criticism of the political system. Despite the long-term, strong emphasis of the special services, the environment Ukrainian Warmia and Mazury was protected his identity and organizational achievements. This was due to many reasons: national policy easing after the lifting of martial law, strengthening the position of the Roman Catholic Church (and therefore functioning in the framework of the Greek-Catholic rite), and finally aware of the activities of the Ukrainian community leaders to improve the position of his countrymen. The political breakthrough began in 1989. With time brought the liquidation of the communist security apparatus and radical change in the position of Ukrainians in Poland.