The tweet had an edited version of one of Markle and Prince Harry's engagement photos. A picture of Cheddar Man, Britain's oldest complete skeleton who research recently proved had a dark complexion and dark curly hair was superimposed over the actress' face.
Patrick J Adams has defended his former Suits co-star Meghan Markle and commended her "power and compassion" following a "sick" and racist post directed at the actress by United States politician Paul Nehlen.
On Friday, Wisconsin politician Paul Nehlen tweeted a photoshopped image of Markle with the face of Cheddar Man - a dark-skinned man researchers say resembles what early Britons used to look like.
The actor, who played her on-screen lover Mike Ross, added: "Get a life".
"Way above your weight class".
Nehlan has been described as a'defiant mouthpiece for the racist alt-right and is challenging House Speaker Paul Ryan in Wisconsin
In a Tweet on Sunday linking to a report by British tabloid the Daily Mirror, Nehlen defended the posting. "Much love." Fans were quick to comment on the image, with one writing, "This is so cute", while another said: "Made me cry". "It's not a laughing matter, so I chose to laugh about it". Nehlen is running to replace Paul Ryan in the Republican Primary for Wisconsin's 1st congressional district elections later this year.
A backer of President Donald Trump, he has previously spread anti-Semitic and alt-right memes on social media.
Nehlen "has spent months curating an image of a sometimes ironic, but most certainly honest, white nationalist willing to say things meant to push populist nationalism into the discourse", writes the Southern Poverty Law Center. He went on former KKK leader David Duke's podcast last month and talked about supporting white nationalism.
The Republican challenger is known for his controversial statements, particularly on Twitter.
A facial reconstruction of the remains of Cheddar Man, whose skeleton was found in Gough's Cave in Somerset, was conducted by DNA specialists from the Natural History Museum and University College London. The findings suggest lighter skin pigmentation now seen as typical of northern Europeans is far more recent than previously thought.