race card

Short definition from Wiktionary

Noun

1. 1
   The invocation of a person's race in order to gain sympathy or an advantage.
2. 2
   A printed card or pamphlet giving information about a series of horse races and listing the horses to be run; a racebook.

Verb

1. 1
   To invoke race in a discussion in order to gain sympathy or an advantage in that discussion.