PROVO, Utah (AP) — Defense witnesses in the prosecution of the man accused of killing Charlie Kirk said Friday that conjecture in the media over his guilt and depictions of him as a “monster” are making it impossible for Tyler Robinson to get a fair trial.

The pretrial testimony came as Robinson’s attorneys pressed a Utah judge to ban cameras from his case. They said live broadcasts of the proceedings are tainting potential jurors, by feeding into speculative stories based on Robinson’s courtroom demeanor and alleged confessions.

Media organizations, prosecutors and Kirk’s widow, Erika Kirk, want the court to allow cameras. They argue transparency is the best way to guard against the misinformation and conspiracy theories that concern Robinson’s defense team.