The memo also warned of possible violence the day before the rally.
“We are aware of a small number of recent online threats of violence related to the planned rally, including online discussions encouraging violence the day before the rally,” said the letter from the DHS Office of Intelligence and Analysis .
Although the department believes that some individuals may use violence, they have no evidence of any specific or believable act associated with the event.
The intelligence warning is part of an information-sharing effort based on the expected attendance of people coming to the country’s capital and the fact that the same organizer has similar rallies scheduled in 15 other states for the next month.
The DHS also warned that lone perpetrators and small groups of individuals “can mobilize violence with little to no warning, particularly in response to confrontational encounters with supposed opponents or calls for escalation by key influencing factors”.
Officials have raised concerns that opposing groups are another concern of violence at the rally.
The intelligence letter states that the organizers of the event stated that they had received “death threats” from opponents of the rally.
“On the same day, a counter rally is to take place on Freedom Plaza in Washington, DC, which increases the potential for violence between supposed ideological opponents,” it says.
An additional challenge for law enforcement agencies is the likely use of encrypted or closed communication platforms by those who intend to use violence, according to the mandate.
According to DHS, social media users discussed the storming of the U.S. Capitol on the night before the rally in early September, and one user commented on the kidnapping of an identified member of Congress.
Other social media references to violence include discussions about using the rally to attack local Jewish institutions, elected officials and “liberal churches”.
In addition, there are conflicting media reports suggesting that some members of the Proud Boys and Oath Keepers may attend the Justice for J6 rally on January 6, Capitol Breach, including violent attacks on law enforcement.
“Some local violent extremists have promoted Babbitt as a martyr and used her death to advocate violence,” it says.
This story has been updated.