Pavlensky explained his actions as follows:
"Lubyanka's burning door is a gauntlet thrown down by society to the terrorist threat. The Federal Security Service employs non-stop terror and keeps 146 000 000 people under its power. Fear turns free people into a sticky mass of separated bodies. Anyone can be made short work of who can be reached by CCTV cameras, wiretapping and passport control. Military courts do away with any signs of free will. But terrorism can only exist due to an animal instinct of fear. Yet there is a defensive reflex which makes a man resist this instinct. This is a reflex to fight for your own life. And life is something worth to start fighting for".In a few seconds after the start of the performance Pavlensky was captured by FSB officers.
Here's the video of the event:
It was not the first time when Petr performed publicly. The other his famous performances were sewing own mouth, cutting off own ear, hammering own testicles on Red Square, etc.
There are rumors that this his performance may become even more popular than the Pussy Riot's singing in a Moscow cathedral.
P.S.: at the moment the doors are under reconstruction.