Are you allowed to turn right in this situation?

Why?

The police officer has their back towards you, which prohibits traffic from your direction from entering the junction. This signal applies despite the green traffic light. You must remain before the junction, even if you intend to turn right.

art. 5 ust. 2 Prawa o ruchu drogowym; § 108 ust. 3 rozporządzenia w sprawie znaków i sygnałów drogowych