To stimulate a shift in thinking, steer clear of the influencers. Instead target small groups of people on the “outer edge” or fringe of a network.
"What strategy do we take if we want to use an online or real world neighborhood network to ‘plant’ a new idea? Is there anyone in a social network who is effective at transmitting new beliefs? The new study delivers a surprising answer: yes, and it’s the people you’d least expect to have any pull. To stimulate a shift in thinking, target small groups of people in the 'outer edge' or fringe of a network."
Article: Study Finds Surprising Source of Social Influence