Read complete coverage of the beating and trial from our sister publication OC Weekly.

Gut-wrenching security video of the Kelly Thomas beating by Fullerton police was aired in court today.

Officer Manuel Anthony Ramos faced charges of second degree murder and involuntary manslaughter; Corporal Jay Cicinelli, a former LAPD cop, was charged with involuntary manslaughter.

Warning: Video, after the jump, is graphic and hard to stomach:

Monday's hearing was to determine whether the duo should stand trial. Ramos is heard saying during the confrontation with the schizophrenic homeless man, then 37:

Now you see my fists? They're getting ready to fuck you up.

The officers hit Thomas with fists, a baton and the but of a gun during the July 5 confrontation. Other officers soon joined in and crowded Thomas, who was on the ground.

He yelled for his father in pain:

Dad, they're killing me. Dad, dad.

His father told Fox 11 News that his boy believed he was the only one who could save him.

Read complete coverage of the beating and trial from our sister publication OC Weekly.

[@dennisjromero / djromero@laweekly.com / @LAWeeklyNews]

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