The investigation continues into Sunday's police shooting death in Los Angeles' Skid Row.

• 6:15 p.m.: LAPD provides unusual level of detail about incident; shooting will be early test of body camera policy
• 4:25 p.m.: Skid Row regulars say suspect was humble, sometimes angry
• 2:15 p.m.: Mayor calls for patience during investigation; won't rush release of on-body camera footage
• 12:33 p.m.: Suspect 'forcibly grabbed' officer's gun, Beck says
• 6:37 a.m.: At least 1 officer wearing body camera
• Witness video (Caution: Graphic material and language)

But this encounter was captured on video by a bystander -- a video that's gone viral and has been seen by millions.

That could complicate the official investigation because, no matter the eventually ruling, many people have already drawn their own conclusions based on what they saw online.

 Lisa Graziano, professor of criminal justice at Cal State L.A.,  specializes in policing, technology and the Internet.

She tells Take Two that videos are a double-edged sword: they force police to be more transparent, but also are ammunition for those who implicitly distrust law enforcement.