Prince Harry has accused journalists and editors of having "blood on their hands" in relation to phone hacking, media intrusion and unlawful newsgathering techniques that he says wrecked friendships and romantic relationships and sent him into a spiral of depression.
He is suing Mirror Group Newspapers (MGN) over claims that his phone was systematically hacked and he was subjected to media intrusion and unlawful newsgathering techniques for more than 15 years.
He is seeking to hold people accountable for their actions to prevent further harm.
Harry says he is targeted by the tabloid press and wants to expose the criminal activity for the sake of public interest.
He believes that the country's press and government are at "rock bottom" and that democracy fails when the press fails to hold the government accountable.
He wants to "save" journalism as a profession.
Harry, the Duke of Sussex, has given a witness statement at the High Court in London in a case against the Mail on Sunday (MGN) newspaper over allegations of phone hacking and unlawful activities.
Harry claims that MGN journalists used illegal methods to obtain personal information about him, including his relationship with Chelsy Davy and his mother, Princess Diana.
The case is part of a wider crusade against the British media, which Harry accuses of invading his privacy during his youth and early adulthood.
The late Queen Elizabeth II once sent an aide to stay nearby during a trip to Australia in 2003 to provide support to Harry after intense media coverage.
The trial judge had previously told Harry to attend court on Monday, but he was not present, delaying his evidence until Tuesday.
Harry, Duke of Sussex, has accused media outlets of unlawful behavior and hacking into his phone, including the Daily Mirror, which he believes obtained information about his thumb injury in 2000 through phone hacking.
Harry's lawyer claims that phone hacking is "pure speculation," but Harry insists that live phone-tapping must have been used to obtain the story.
Harry faces questions about his personal life, including his decision to wear a Nazi uniform to a party, drug use, and his relationship with
Prince William, Queen Camilla, and Meghan Markle.
The trial continues and lawyers for MGN have apologized for one instance of unlawful information gathering.