https://www.salon.com/2021/08/26/trump-sued-by-capitol-police-for-jan-6-violence/
The officers contend that there are a number of laws and statutes that the defendants violated, including the 1871 Klu Klux Klan Act, which protects the U.S. government from violent conspiracies. The suit also alleges that the defendants carried out "bias-motivated acts of terrorism," which goes against District of Columbia law, according to the times Times.
"This is probably the most comprehensive account of Jan. 6 in terms of civil cases," Edward Caspar, one of the plaintiffs' lawyers, told the Times. "It spans from the former president to militants around him to his campaign supporters."
The plaintiffs appear to lay most of the blame at Trump's feet. The president, it says, "encouraged and supported acts of violence, knowing full well that among his supporters were such groups and individuals as the Proud Boys, who had demonstrated their propensity to use violence."
https://www.lawyerscommittee.org/wp-content/uploads/2021/08/001-Complaint.pdf