Chelsea Clinton took to Twitter on Tuesday to express her outrage at a CNN interview with Rep. Sean Duffy (R., Wis.), who said terror attacks carried out by the Islamic State pose more of a threat than those conducted by white terrorists. Clinton retweeted a post from Black Lives Matter activist DeRay Mckesson, who tweeted a video of the interview. Mckesson said that Duffy's answer arguing Islamic extremism is more of an issue than white terrorism "is exactly the problem." In the interview, CNN host Alisyn Camerota was admonishing Republicans for not including white terrorists in their dialogue as often...