Who's Maciej Mound from the fresh Left? His behaviour is shaking

Senator of the fresh Left, Maciej Kopec, was at the centre of attention and controversy following the publication by PiS MP Dariusz Matecki, of recordings showing his vulgar behaviour in the Sejm. Matecki claims to have more material documenting Mound's aggressive actions, including an incidental in which the senator was allegedly expected to endanger a Confederate MP. Polish politics does not deficiency emotion, but certain behaviours cross the limits of acceptable norms. A late published video depicting Senator fresh Left, Maciej Kopec, in an unfavourable light, sparked a stormy discussion about ethical standards among parliamentarians. Who is Maciej Mound, and what precisely happened on that video? Who's Senator Maciej Mound? Maciej