This on-scene account of a police shooting last night in Los Angeles has been retweeted over 27,000 times:

The man later died:

According to the LAPD, the man was carrying a knife when he was shot:

That was no excuse, according to Jamelle Bouie and others responding to the news:

According to KTLA, the man allegedly approached officers while carrying the knife.

Cue conspiracy theory:

Update from a reader to clarify a tweet included above: