It's every civic-minded citizen's duty.
Obviously Damo has more access to information on people to know if they are demented blowhards or an actual violent threat, but that doesn't absolve you or me from looking the other way on what we suspect is an actual threat of harm to Americans.
Note that most of the mass murders by nutjobs, MAGA morons and the like all telegraphed their intentions on the Internet.
Also note how the MAGA morons dislike me mentioning reporting suspected threats to the FBI, especially right after 1/6. A few nutjobs troll the same thing, but they are nutty, not actual threats.