From Chapter XV of Memories of the Russian Court, by Anna Vyrubova:
Shaken though I was with that experience, I had one more agony to bear. When my chair was being wheeled back along the corridor I passed the open door of Alexei's room, and this is what I saw. Lying sprawled in a chair was the sailor Derevenko, for many years the personal attendant of the Tsarevich, and on whom the family had bestowed every kindness, every material benefit. Bitten by the mania of revolution, this man was now displaying his gratitude for all their favors. Insolently he bawled at the boy whom he had formerly loved and cherished, to bring him this or that, to perform any menial service his mean lackey's brain could think of. Dazed and apparently only half conscious of what he was being forced to do, the child moved about trying to obey. It was too much to bear. Hiding my face in my hands, I begged them to take me away from the sickening spectacle.