In an Atlantic article about Race Baiting for the Presidency, the authors reference Tali Mendelberg's analysis of how politicians use implicit messages of racial resentment:
 

In her book, The Race Card, Tali Mendelberg argues that because politicians and voters want to adhere to this norm of social equality, some of them resort to employing and responding to implicit messages of racial resentment to maintain or increase political power and socioeconomic status. This is where the use of code words prove particularly useful in political communication—from Richard Nixon’s “law and order” to Ronald Reagan’s “states’ rights” to the euphemistic “urban” and “inner-city.”
 

Mendelberg is Professor of Politics and CSDP faculty associate.