Some Jackson fans are nursing a grudge against journalists for what they see as unfair coverage of the superstar.
Abusive chants have been directed at reporters in the media pen at the courthouse or outside Jackson's Neverland ranch.
Other fans have taken to sounding their car horns in unison to disrupt live broadcasts or tried to stop cameras filming.
Earlier this week, police banned those camped out in front of court from using rocks to hold down their posters, amid fears the stones could be stockpiled as weapons.
They're worse than the sciavoites. Their cause I could understand, even though I didn't agree. I don't get this mess, however. Please don't e-mail me to explain.