#favouritism__discrimination__favoritism  unfair treatment of a person or group on the basis of prejudice
  supertype:  social_control  control exerted (actively or passively) by group action
  subtype:  ableism__ablism__able-bodiedism__able-bodism  discrimination in favor of the able-bodied
  subtype:  ageism__agism  discrimination against middle-aged and elderly people
  subtype:  cronyism__croneyism  favoritism shown to friends and associates (as by appointing them to positions without regard for their qualifications)
  subtype:  fattism__fatism  discrimination against people who are overweight
  subtype:  heterosexism  discrimination in favor of heterosexual and against homosexual people
  subtype:  nepotism  favoritism shown to relatives or close friends by those in power (as by giving them jobs)
  subtype:  racialism__racism__racial_discrimination  discriminatory or abusive behavior towards members of another race
     subtype:  racial_profiling  a form of racism consisting of the (alleged) policy of policemen who stop and search vehicles driven by persons belonging to particular racial groups
  subtype:  sexism  discriminatory or abusive behavior towards members of the opposite sex
     subtype:  male_chauvinism__chauvinism__antifeminism  activity indicative of belief in the superiority of men over women
     subtype:  sexual_discrimination  discrimination (usually in employment) that excludes one sex (usually women) to the benefit of the other sex

No statement uses or specializes favouritism; click here to add one.