Displacement refers to altering the target of an impulse. For example, an unacceptable violent impulse toward one’s father might be transformed into a hostile attitude toward policemen or other authority figures.
Baumeister, R. F., Dale, K., & Sommer, K. L. (1998). Freudian defense mechanisms and empirical findings in modern social psychology: Reaction formation, projection, displacement, undoing, isolation, sublimation, and denial. Journal of Personality, 66(6), 1081-1124.