You can threaten to sue anyone for anything basically but you can't threaten to call the cops on them unless they pay you. You can see the actual details spell

You can threaten to sue anyone for anything basically but you can't threaten to call the cops on them unless they pay you. You can see the actual details spelled out in layman terms in (for example) the California jury instructions for CA PC 518 extortion. https://www.justia.com/criminal/docs/calcrim/1800/1830/ https://www.justia.com/criminal/docs/calcrim/1800/1830/