It was the most serious instance of violence reported in connection to Spencer's appearance at the university.
MI attorney Kyle Bristow had been threatening to sue Ohio State and the University of Cincinnati on behalf of Padgett if they refused to rent space for Spencer to speak.
According to the arrest report, the Fears brothers shouted "kill them" and "shoot them" at Tenbrink. Tenbrink fired a single shot at an unidentified victim, which missed, according to authorities.
Police said all three face felony charges of attempted homicide. The three men fled the scene in a silver Jeep. The Fears brothers told Tenbrink to use his weapon.
Gainesville Police Spokesman Ben Tobias said in a statement, "I am amazed that immediately after being shot at, a victim had the forethought to get the vehicle's license number".
After officers read Tenbrink his Miranda rights, he admitted he was the shooter.
With white nationalist "identitarian" Richard Spencer and his adherents now safely out of Alachua County.
Before Spencer's speech on Thursday, the Gainesville Sun actually interviewed William Fears about why he drove from Houston to hear an advocate of ethnic cleansing lecture college students about free speech. "Us coming in and saying we're taking over your town, we're starting to push back, we're starting to want to intimidate back". And even after Spencer's "Unite the Right" rally on a Virginia campus in August devolved into violence and left a woman dead, UF administrators could not prevent his visit, they could only prepare for it. The University of Cincinnati last week ultimately decided they would "uphold the First Amendment" and allow Spencer to speak, after a threat of a lawsuit from Bristow.
"After critical assessment by campus police, in consultation with state and federal law enforcement officials, we have determined that Mr. Spencer is not welcome on our campus, as this event at this time presents a major security risk to students, faculty, staff and visitors to campus", Penn State President Eric Barron said in his decision denying Mr. Spencer.
Protesters began yelling and chanting when Spencer took the stage, and he criticized them for trying to suppress his speech.