As mentioned the Czech Communistic regime aimed to spread discord within society, as distrust and envy makes people better controllable for absolustic systems .... and just to mention : a lot of Communists defected in 1968 - but those were people, who supported/lived with the bit loose(r) form of Communism from the mid60`s onwards (the time of Dubcek/Novotny) until the end of the "Prague Spring" but didn`t want to stay under hardcore communistic opression .... Was Ancerl a communist/sympathizer ? Well we (or at least I) don`t know for sure ....