Falsely accusing someone of a crime is defamation per se, which means that they don't have to provide proof of reputational harm. This would be a fun lawsuit to bring.
“Never believe that anti-Semites are completely unaware of the absurdity of their replies. They know that their remarks are frivolous, open to challenge. But they are amusing themselves, for it is their adversary who is obliged to use words responsibly, since he believes in words. The anti-Semites have the right to play. They even like to play with discourse for, by giving ridiculous reasons, they discredit the seriousness of their interlocutors. They delight in acting in bad faith, since they seek not to persuade by sound argument but to intimidate and disconcert. If you press them too closely, they will abruptly fall silent, loftily indicating by some phrase that the time for argument is past.”
― Jean-Paul Sartre
Their mother should sue for defamation. Explain why they accused said mother of conducting foreign relations without the permission of the government.
This unironically could work lol. Let them start getting payouts
Falsely accusing someone of a crime is defamation per se, which means that they don't have to provide proof of reputational harm. This would be a fun lawsuit to bring.
There's definitely reputation harm to be done if you are suddenly associated with Nazis AND Putin