Media Bias Vilifies LAPD. What's New?

What media bias? Can you spot the disconnect between this AP headline and the story that accompanies it?

"Police Use Stun Gun on Student for Not Showing ID at UCLA Library"

...Police tried to escort Tabatabainejad, 23, out of the library after he refused to provide identification. Tabatabainejad instead encouraged others at the library to join his resistance, and when a crowd began to gather, police used the stun gun on him, Greenstein said.

The headline makes it sound like they just stunned a student who would show his ID! The story tells that the student entered the library late at night, repeatedly refused to show his ID (library procedure), resisted police escort and refused to leave, and then appears to have either attempted to incite a riot or violence against police. Why does the media feel the need to constantly vilify the LAPD?