I was in the room when this unfolded at the 2013 Conservative Political Action Conference in a session called "Trump the Race Card: Are you sick and tired of being called a racist and know you're not one?" What was said is shocking, and it's creating blowback for the Republican Party months later.
Yes, that's right, upon hearing that Frederick Douglass wrote a letter to his ex-master forgiving him, the white guy asked, "[forgiving the slave owner] for giving him [the slave] shelter and food all those years?" Seriously.
The Republican National Committee's Florida state director for Hispanic outreach switched to the Democratic Party not long after CPAC. His letter cites the events at this panel as one of the many reasons.