Experts defend inaction
http://www.sfgate.com/cgi-bin/article.cgi?f=/c/a/2008/06/17/BA2G11ARO9.DTL
Bystanders are justifiably scared and confused in such situations, the experts said Wednesday, and they lack the experience needed to respond with force. They can also be mesmerized by shock.
John Conaty, a veteran homicide detective and former patrol officer in Pittsburg, said that in interviews of witnesses to violence, "the common thing you hear is, 'I was frozen in fear. I just couldn't take action.' "
Conaty questioned whether the witnesses had even been capable of stopping Aguiar. "If they were physically able, you have to take a look at whether they were psychologically prepared to intervene," he said.
"I would not condemn these people," said John Darley, a professor of psychology and public affairs at Princeton University who has studied how bystanders react in emergency situations. "Ordinary people aren't going to tackle a psychotic. (much more at link)