TV host's joke about Mitt Romney's black grandson Kieran Romney falls flat January 1, 2014 - 9:39AM 367 reading now 2012 Republican presidential candidate Mitt Romney Photo: AP Los Angeles: US television host Melissa Harris-Perry apologised on Tuesday for a recent segment on her show that joked about former US Republican presidential candidate Mitt Romney's adopted African-American grandson, Kieran. Ms Harris-Perry said that the segment on Sunday's Melissa Harris-Perry show on MSNBC was meant to celebrate diversity and not disparage it. The segment asked a panel to humorously caption a photo from the past year. One of the photos was of Romney holding his adopted African-American grandson alongside his wife, Ann, and other grandchildren. Romney family photo including adopted child Kieran Romney. Actress Pia Glenn sang "one of these things is not like the others," and comedian Dean Obeidallah joked that the photo "really sums up the diversity of the Republican party." "Whatever the intent, the segment proceeded in an unexpected way that was offensive," Ms Harris-Perry said in a statement. Without reservation or qualification, I apologise to the Romney family and to all families built on loving transracial adoptions. Ms Harris-Perry, who is African-American and a political science professor at Tulane University, is the third MSNBC host to apologise for insensitive comments in the past two months. Last month, actor Alec Baldwin's late-night talk show was cancelled shortly after he apologised for calling a celebrity photographer a homophobic slur. Host Martin Bashir resigned earlier this month after being suspended by MSNBC for making derogatory comments about former US vice presidential candidate Sarah Palin.