Students lied to a public safety officer to gain admittance to a fraternity house for a multi-day sit-in, according to the report by lawyers Christina D. Riggs and Albert F. Moran, who were hired by Swarthmore to look into the April protests. Students video-recorded their confrontations with administrators — the videos are posted on the protesters’ website — and forced open a dean’s office door while he tried to close it and allegedly threatened to follow him to his car, the report said.