"Bam, bam, bam". It was late in the evening and in the silence of night the door shook with the loud knocking. I instantly guessed that this could only be the security police. My friends who had been sharing a pleasant evening suddenly seemed pale and wide-eyed, as I suppose I must have been. There was nothing to do but open the door before they broke it down. Being in a wheelchair I had long ago reckoned that if the police did decide to arrest me there was going to be no escape. So at last, like other comrades that I had read about or met, my time had come...