The Baltimore-based civil rights group NAACP recently tweeted thanks to Prince Harry and Meghan Markle for “their leadership” and “commitment to truth, justice, and equality”.

Coca-Cola has boycotted Facebook for 30 days, despite Mark Zuckerberg, the chief executive, announcing policy changes on Friday.

However, the campaign says the changes will not “make a dent in the problem”.

Jessica Gonzalez, of Change the Terms, a coalition of civil rights groups, said: “We need more enforcement, not words that remain unfulfilled.”.

Meghan Markle and Prince Harry urge Facebook boycott [INSIGHT]

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Meanwhile, speaking about Harry and Meghan's involvement with the campaign, a source told Town and Country magazine: “As we’ve been developing Archewell, one of the areas the Duke and Duchess of Sussex have been keen to address is online hate speech, we’ve been working with civil rights and racial justice groups on it

“They have been working to encourage global CEOs to stand in solidarity with a coalition of civil and racial justice groups, which are calling for structural changes to our online world.”

Facebook was fined after Cambridge Analytica, a UK firm, harvested the personal information of tens of millions of users without permission

Cambridge Analytica (CA) was accused of harvesting data from 50 million Facebook users without their consent and failing to delete it

Former CA employee and whistleblower Christopher Wylie, claimed CA collected data through a Facebook personality quiz called This Is Your Digital life