There is excellent reading/viewing/listening « at the Oral History Project of the Urban School of San Francisco »:
‘We went through a number of Dr. Mengele’s dreaded selections where we would have to remove our clothes on the pretext of a medical checkup. During the time between while we stood in line waiting for Dr. Mengele to decide who should live, and who should die – with his glove on, and a little stick in his hand – many people would just faint. It took a lot of energy to go through such excitement, and later on we no longer had this energy. Of course, if you fainted they just dragged you away. You were too weak. There was always another transport to replace anyone who did that. Right in front of me I saw all these people from our town taken away just like that. They went through, by this time, also a number of these selections, which would always happen spontaneously. We never would know, surprise selections. I can go on, but do you really want me to?’