PASADENA, CA - JANUARY 09: Executive producer Reza Aslan speaks onstage during ABC's Of Kings and Prophets panel as part of the ABC Networks portion of the 2016 Television Critics Association Winter Tour at Langham Hotel on January 9, 2016 in Pasadena, California. (Photo by Frederick M. Brown/Getty Images)
ORIGINAL STORY: The host of a CNN documentary series about spirituality is making headlines over his heated reaction to President Donald Trump's response to Saturday's deadly terrorist attacks in London.
Religious scholar Reza Aslan, host of "Believer," took to social media after Trump tweeted following the London attacks in support of his controversial travel ban targeting Muslim-majority nations.
Aslan, who is Muslim, tweeted in response to Trump's first message: "This piece of [expletive] is not just an embarrassment to America and a stain on the presidency. He's an embarrassment to humankind."