The Duke of Sussex has accused social media giants of sparking a "hate crisis" and urged advertisers to use their purchasing power to transform the industry.
The Duke wrote for the US-based business magazine Fast Company, explaining Meghan and his wife's efforts to help the Stop Hate for Profit campaign.
He announced that they had personally called the heads of large corporations and asked them to suspend their advertising revenue from social media websites that do not combat hate speech.
Harry said her message to them is to rethink support platforms that "contributed to, fueled and created the conditions for a crisis of hatred, a crisis of health and a crisis of truth."
In the Stop Hate for Profit campaign, led by a number of NGOs, companies withheld advertising revenue from Internet sites totaling $ 7 billion (£ 5.4 billion) in July.
The Duke said that social media made its users his product.
“Every time you click, they learn more about you. Our information, private data and unfamiliar habits are exchanged for advertising space and dollars, ”he wrote.
He urged technology companies to "re-architecture our online community" to ensure that it is defined by compassion, truth and inclusivity rather than hatred and scare tactics.
The Duke compared the harmful effects of social media on children to the discovery in the 1970s that lead build-up impaired their mental development.
"We knew (lead) was harmful to our children, so we made the changes necessary to keep them safe, healthy and healthy," he said.
He added, “When we do the right thing, when we create safe spaces both online and offline, everyone wins. Even the platforms themselves. "
He concluded by saying, "The world will feel it and we will all benefit from it."
The Duke and Duchess of Sussex spoke out on the subject of online bullying and harassment from the media.
Meghan is currently in a bloody High Court battle with the editors of Mail am Sonntag and MailOnline over an article reproducing portions of a "private and confidential" handwritten letter she sent to her estranged father, Thomas Markle, in August 2018 .
When Harry announced the action in October last year, he said in a statement: "My wife has become one of the latest victims of British tabloids that campaigns against people without thinking of the consequences."
He said, “Simply put, it's bullying that scares people and silences them.
"We all know that this is not acceptable on any level. We will not and cannot believe in a world in which there is no responsibility for it."