"Joshua Fisher-Birch, a research analyst with the Counter Extremism Project, said people should not be quick to blame far-left groups for the letters just because of the symbols included. In fact, he said the opposite could be true.

'While this threat includes anti-fascist and what appears to be a Satanist symbol, as well as a version of an LGBTQ+ Pride flag, it is extremely likely that the sender does not belong to any of those groups or communities, but, in fact, holds far right or extreme right beliefs, and is seeking to blame antifascists, Satanists, and LGBTQ+ people," Fisher-Birch said. "The message that there should be ‘no more elections’ because the U.S. is ‘a communist country’ does not fit with the symbols. Overall, this resembles previous hoaxes by the far right in an attempt to blame the left.'"