[IPTN]

Criminal charges in the US are pursued by the Government. The idea of private citizens deciding whether to press charges is widely misunderstood; District/US Attorneys can take a victim's wishes into consideration when deciding to charge a defendant (it may be difficult to win a case when the primary/only witness is uncooperative or conversely even if someone has been the victim of a crime the DA may not pursue a case because they feel they are unlikely to get a conviction) but the decision entirely lies with the Government.

Now, as you linked. Civil Tort's are entirely within the realm of private "citizens" (companies count as people too) to bring forth on their own.

https://en.wikipedia.org/wiki/Criminal_charge