Also race baiter;
1. One who baits a racial group;
2. One who baits anyone using racially-inflammatory issues or stereotypes.
It does not mean "one who makes a claim of racism that is believed to be dubious."
Saying that one is making a dubious claim of racism when the claim may involve racism is race-baiting.
Janet, in what looked like the action of a race-baiter, posted an article, out of the blue, about a 20 year old black man who had committed a horrible crime. Her intent was to incite anger at black people.