Of course, if sociologists accepted the former definition, they wouldn't have anything to talk about.

Conflating the two definitions and describing people as 'racist' for re-enforcing racial imbalances in society is disingenuous.

A lot of people oppose affirmative action (thus earning the label 'racist' according to the latter definition) not because they are prejudiced, but simply because they do not believe in the efficacy of the process.