It’s not true, but it could be. The Secret Service did not label Progressive Slovakia as left-wing extremists
A painful shot in your own foot or a bid for visibility? The Secret Service has refuted Irena Bihari’s claims. The politician claimed that the SIS had labelled Progressive Slovakia a left-wing extremist party. This is not true, but it could be, sounds the notorious reaction to unsubstantiated and fabricated claims. It is usually addressed to various purveyors of dubious truths and bombastic fabrications. This time, it was the chairwoman of the extra-parliamentary Progressive Slovakia (PS) who earned it.
Source https://standard.sk/nie-je-to-pravda-ale-mohla-by-byt-tajna-sluzba-neoznacila-progresivne-slovensko-za-lavicovych-extremistov/