With the exception of Hillary Clinton, perhaps nobody stoked the conspiracy crowd’s fevers like McCain. He was “songbird” McCain, a secret agent of the North Vietnamese who threw the 2008 election to Obama, covertly met with the leaders of Islamic State in Syria, secretively started the Robert S. Mueller III “witch hunt” against Trump, and was “in bed with the Clinton Foundation” but turned against Clinton shortly before his death.

A post on Sunday from the leader of a prominent conspiracy forum wrestled with whether McCain killed himself or surrendered: “Suicide weekend? Hands up? . . . We are in control. BIG week ahead.”

One wacky participant speculated: “National Dog Day happens to be the day McCain’s death announced. Coincidence?” (Sorry, no. McCain died Saturday. National Dog Day was Sunday.)