In some cases, the group that is the target of prejudice is itself responsible for continuing the prejudice. This can be explained as :

Self-Fulfilling Prophecy

Self-fulfilling prophecy : In some cases, the group that is the target of prejudice is itself responsible for continuing the prejudice. The target group may behave in ways that justify the prejudice, that is, confirm the negative expectations. For example, if the target group is described as ‘dependent’ and therefore unable to make progress, the members of this target group may actually behave in a way that proves this description to be true. In this way, they strengthen the existing prejudice.