It's a bit weird how the article paints this as a failure of the uncivil person - this is pretty clearly a failure of the sabotager. Some people are willing to harm random third parties (shareholders) in acts of petty revenge against those they dislike (for possibly valid reasons). Quite a bit of victim blaming going on there.
I agree that the person with power should - as a pragmatic move - attempt to behave in a manner that accounts for the bad acts of others. In much the same way, people should avoid putting themselves into situations where there is a high risk of crime. But the ultimate responsibility for an individual's actions lies on the individual, not the person who was "asking for it."