What does a person have to prove to win a slander or libel claim?
https://www.gta-law.com/faqs/slander-libel-claim/
The “public” plaintiff has additional hurdles to overcome to recover for libel or slander. An example of a public figure is a politician. Along with establishing all of the regular elements of the tort, a plaintiff who is a public figure must also show that the defendant knew the false statement was false, or at least acted with reckless disregard as to its truthfulness. Newspapers may escape liability for libel when they merely report false statements as long as the paper had no particular reason to doubt the statement at the time it was printed.
Finally, the plaintiff often has to prove economic harm in order to recover on a defamation suit. Therefore, the plaintiff may need to be able to demonstrate a loss of business as a result of the defamation in order to establish a right to the recovery of money. However, some types of statements are so damaging that the plaintiff does not have to prove any economic loss. These statements tend to be those that accuse the plaintiff of sexual impropriety or criminal conduct.