How often does NBC fake video with deliberately false edits? Often enough

Last week, when the race mobs were forming, racial violence was already starting as a 78 year old man was beaten in the name of "Trayvon", and the Black Panthers had offered a reward for Zimmerman, NBC edited a video to this:

Zimmerman: "This guy looks like he’s up to no good. He looks black."

It was later discovered that the unedited 9-1-1 conversation went like this:

Zimmerman: This guy looks like he’s up to no good. Or he’s on drugs or something. It’s raining and he’s just walking around, looking about.

Dispatcher: OK, and this guy — is he black, white or Hispanic?

Zimmerman: He looks black.

In August of 2009, NBC's Contessa Brewer (who still has the same job) used deceptive editing so that that MSNBC viewers wouldn't know that the man carrying firearms to a Tea Party was a black man. This allowed Brewer to then host a segment about how racist the Tea Party is towards President Obama and how this racism might just lead to the unthinkable--the assassination of our President:
This Tea Party man with the gun is black himself, this is pretty extraordinary editing (and an insane discussion follows it).

Here is NBC cutting out words about the national debt, to create Perry saying that Obama is a black cloud hanging over America.

NBC using that same edit, on a different news show. Click here for the video.

Here is the article that most of this was taken from, it is a good piece.