From discoverthenetworks.org an explanation of BDS:

“But it is not enough for the organizer to be in solidarity with the people. He must also, said Alinsky, cultivate unity against a clearly identifiable enemy; he must specifically name this foe, and “singl[e] out”[44] precisely who is to blame for the “particular evil” that is the source of the people’s angst.[45] In other words, there must be a face associated with the people’s discontent. That face, Alinsky taught, “must be a personification, not something general and abstract like a corporation or City Hall.”[46] Rather, it should be an individual such as a CEO, a mayor, or a president.

Alinsky summarized it this way: “Pick the target, freeze it, personalize it, and polarize it…. [T]here is no point to tactics unless one has a target upon which to center the attacks.”[47] He held that the organizer’s task was to cultivate in people’s hearts a negative, visceral emotional response to the face of the enemy. “The organizer who forgets the significance of personal identification,” said Alinsky, “will attempt to answer all objections on the basis of logic and merit. With few exceptions this is a futile procedure.”

This is exactly what the left did to Bush. Our people never retaliated.