How do companies and people encourage people to do things against their own interests? What can you do to prevent this?

Some groups of people, frustrated by a lack of jobs and financial resources, may feel a sense of resentment against those who are better off. This creates a "have-nots" versus "haves" mentality. If one candidate appears to represent the "haves" or the "establishment," or even the status quo, people feeling resentment may automatically gravitate toward the candidate who offers change, or the candidate who claims to represent the "have-nots."