Hillary Clinton has condemned Donald Trump for sharing a viral meme which has recently become associated with the white supremacist movement.

Donald Trump, his son and a close adviser have all posted photos of Pepe the frog, a cartoon amphibian which became controversial late last year after a group of gamers worked to associate it with Nazi propaganda.

“This is horrifying,” the Clinton campaign said, referring to the images shared on social media by Mr Trump.

Donald Trump Junior, the Republican’s eldest son, recently uploaded a picture from the film The Deplorables, with cast members’ faces replaced by pictures of his father, himself and people associated with the Trump campaign. They included conspiracy theorist Alex Jones, who said the Newtown massacre was "completely fake", and Breitbart’s Milo Yiannopoulus, who was banned from Twitter for writing racist posts.

Naked Donald Trump Statue Appears Across The States Show all 11 1 /11 Naked Donald Trump Statue Appears Across The States Naked Donald Trump Statue Appears Across The States SAN FRANCISCO, CA - AUGUST 18: A passerby kisses a statue depicting republican presidential nominee Donald Trump in the nude on August 18, 2016 in San Francisco, United States. Anarchist collective INDECLINE has created five statues depicting Donald Trump in the nude and placed them in five U.S. cities on Thursday morning. The statues are in San Francisco, New York, Los Angeles, Cleveland and Seattle. (Photo by Justin Sullivan/Getty Images) Getty Images Naked Donald Trump Statue Appears Across The States SAN FRANCISCO, CA - AUGUST 18: A passerby looks at a statue depicting republican presidential nominee Donald Trump in the nude on August 18, 2016 in San Francisco, United States. Anarchist collective INDECLINE has created five statues depicting Donald Trump in the nude and placed them in five U.S. cities on Thursday morning. The statues are in San Francisco, New York, Los Angeles, Cleveland and Seattle. (Photo by Justin Sullivan/Getty Images) Getty Images Naked Donald Trump Statue Appears Across The States SAN FRANCISCO, CA - AUGUST 18: A passerby takes a picture of a statue depicting republican presidential nominee Donald Trump in the nude on August 18, 2016 in San Francisco, United States. Anarchist collective INDECLINE has created five statues depicting Donald Trump in the nude and placed them in five U.S. cities on Thursday morning. The statues are in San Francisco, New York, Los Angeles, Cleveland and Seattle. (Photo by Justin Sullivan/Getty Images) Getty Images Naked Donald Trump Statue Appears Across The States SAN FRANCISCO, CA - AUGUST 18: People gather around a statue depicting republican presidential nominee Donald Trump in the nude on August 18, 2016 in San Francisco, United States. Anarchist collective INDECLINE has created five statues depicting Donald Trump in the nude and placed them in five U.S. cities on Thursday morning. The statues are in San Francisco, New York, Los Angeles, Cleveland and Seattle. (Photo by Justin Sullivan/Getty Images) Getty Images Naked Donald Trump Statue Appears Across The States SAN FRANCISCO, CA - AUGUST 18: People gather around a statue depicting republican presidential nominee Donald Trump in the nude on August 18, 2016 in San Francisco, United States. Anarchist collective INDECLINE has created five statues depicting Donald Trump in the nude and placed them in five U.S. cities on Thursday morning. The statues are in San Francisco, New York, Los Angeles, Cleveland and Seattle. (Photo by Justin Sullivan/Getty Images) Getty Images Naked Donald Trump Statue Appears Across The States SAN FRANCISCO, CA - AUGUST 18: A passerby hugs a statue depicting republican presidential nominee Donald Trump in the nude on August 18, 2016 in San Francisco, United States. Anarchist collective INDECLINE has created five statues depicting Donald Trump in the nude and placed them in five U.S. cities on Thursday morning. The statues are in San Francisco, New York, Los Angeles, Cleveland and Seattle.(Photo by Justin Sullivan/Getty Images) Getty Images Naked Donald Trump Statue Appears Across The States SAN FRANCISCO, CA - AUGUST 18: A passerby has a picture taken with a statue depicting republican presidential nominee Donald Trump in the nude on August 18, 2016 in San Francisco, United States. Anarchist collective INDECLINE has created five statues depicting Donald Trump in the nude and placed them in five U.S. cities on Thursday morning. The statues are in San Francisco, New York, Los Angeles, Cleveland and Seattle. (Photo by Justin Sullivan/Getty Images) Getty Images Naked Donald Trump Statue Appears Across The States SAN FRANCISCO, CA - AUGUST 18: A passerby has a picture taken with a statue depicting republican presidential nominee Donald Trump in the nude on August 18, 2016 in San Francisco, United States. Anarchist collective INDECLINE has created five statues depicting Donald Trump in the nude and placed them in five U.S. cities on Thursday morning. The statues are in San Francisco, New York, Los Angeles, Cleveland and Seattle. (Photo by Justin Sullivan/Getty Images) Getty Images Naked Donald Trump Statue Appears Across The States NEW YORK, NY - AUGUST 18: Park authorities haul away a statue of a naked GOP presidential candidate Donald Trump that appeared in Union Square Park this morning on August 18, 2016 in New York City. The illegally placed statue drew hundreds of curious onlookers, who took selfie picture with the statue, which was signed "Ginger." A published report attributed the work to the anarchist collective INDECLINE, which titled the project "The Emperor Has No B--s." (Photo by Spencer Platt/Getty Images) Getty Images Naked Donald Trump Statue Appears Across The States NEW YORK, NY - AUGUST 18: A molded foot is all that remains of a statue of naked GOP presidential candidate Donald Trump that appeared in Union Square Park this morning on August 18, 2016 in New York City. The illegally placed statue drew hundreds of curious onlookers, who took selfie picture with the statue, which was signed "Ginger." A published report attributed the work to the anarchist collective INDECLINE, which titled the project "The Emperor Has No B--s." (Photo by Spencer Platt/Getty Images) Getty Images Naked Donald Trump Statue Appears Across The States NEW YORK, NY - AUGUST 18: Park authorities haul away a statue of a naked GOP presidential candidate Donald Trump that appeared in Union Square Park this morning on August 18, 2016 in New York City. The illegally placed statue drew hundreds of curious onlookers, who took selfie picture with the statue, which was signed "Ginger." A published report attributed the work to the anarchist collective INDECLINE, which titled the project "The Emperor Has No B--s." (Photo by Spencer Platt/Getty Images) Getty Images

One of the faces was Pepe with yellow hair.

“All kidding aside I am honoured to be grouped with the hard working men and women of this great nation that have supported @realdonaldtrump and know that he can fix the mess created by politicians in Washington,” Mr Trump’s son wrote alongside the image.

The picture was also shared on Twitter by Roger Stone, a political consultant, who said he was “so proud to be one of the Deplorables”.

Presidential candidate Mr Trump also tweeted an image in October last year of the frog with yellow hair, standing at a podium in front of an American flag.

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Mr Trump has been associated with many fictional characters, most recently Superman.

The association with Pepe will be seen as controversial, however, after he took several days to condemn endorsement from former Ku Klux Klan leader David Duke.