I recently had a small discussion with a redditor that in my eyes made some rather interesting claims. Can anyone here shed light on Jewish influence on Soviet governments in Poland till about the 1970s?

During Stalinism, the preferred Soviet policy was to keep sensitive posts in the hands of non-Poles. As a result "all or nearly all of the directors (of the widely despised Ministry of Public Security of Poland) were Jewish" as noted by Polish journalist Teresa Torańska among others.