Prague in mourning after deadly mass shooting

There is snow billowing around the heart of Prague and the skies are dark and threatening. But a small crowd of people are simply standing, and staring. They are looking at the flickering candles and flowers that have been left in front of the Charles University building, a memorial to those who came here and were killed in the most brutal way.

From through the clouds of snow, Sergei Medvedev crosses the road, a thick grey woolen hat on his head and a bunch of flowers in his hand. He is here to pay his own respects, but Sergei is not simply sympathetic to the suffering of others. He was there.

Right there.