I watched the video. He wasn't rushing the cop, he was trying to get away, just didn't realize that the other cop had gotten around him. There's a noticeable moment when he suddenly recognizes that's a cop he was about to run past, his body language shows he was surprised.
Cops try a few times to use less lethal means, they step off the train, guy with knife sees the cop, then CHASES the cop with the knife in his hand. Stop lying.
Sees cop:
Begins chasing cop:
Top of my list of ways to get shot by police? Chase one with a knife in my hand.