The latest incident at the Boston Marathon is another reminder that no country or event is exempt from violance. What can be done to minimalize the effects.
Years ago the Isreal specialists begin training the general population to be more observant. If any article is left unattended it is immediately reported to authorities.
This would not eliminate the practice but, in my opinion, would minimize the loss of life ... it is not possible to eliminate the practice but if we become aware of unattended packages we may also be aware of those who deliver the potential "bomb".
I would not wish for any member of my family, friends, or any innocent to be harmed in this manner.
I have suggested the observation training used in Isreal .... In a effort to make a safer TED community and our world as a whole what other practices would you suggest.