The private security hired by 9NEWS, was definitely Antifa if you look at his wrist tattoo.
Why did 9NEWS hire Antifa as its security?

9NEWS reporter @KyleClark seems like someone who would be worth a talk to, doesn't he? Third pic is unrelated.

Man in blue holding the bodyguards phone is Zack Newman. He is the aforementioned producer at 9NEWS.

Looking at the floor, you can see the victim was backing up from the gunman.

Comparison of relative positions during slap and during shooting, further proving victim was backing up.

Here is the victim, looks like a horrible racist, doesn't he?

Pictures put in order. There isn't a chance in hell this guy is able to walk via self defense unless his lawyer is dumber than internet autists. Also shows that I was correct as to who was in the blue shirt, the producer who was arrested. @SomeBitchIKnow @ThunderB

Writing under his tattoo says "Submission", a well known Denver "protest" group linked to another well known "idea".

On video, Kyle is retreating, chased down, and attacked by multiple attacks, one armed with a pistol. The shooting that occurred today resembles it in absolutely no way. Try to process the differences between the incidents, I imagine you have the thought capacity to do so.