Since reporter who hired the murderer seems to be cozy with Antifa. He defends them and were physically on their side. We all know Antifa doesn't let anyone near them that is not approved by them.
Murderer doesn't look or act like any security hired by media that I've seen. The soi seems to be strong in him. Remember the marine in Seattle who disarmed a masked Antifa follower? And Kevin Corke's security who helped Posobiec get out of Antifa harassers in DC?
Marine in Seattle https://www.youtube.com/watch?v=aVAMUejexa0
Posobiec in DC https://twitter.com/FordFischer/status/1276671552348618752
It's pretty clear what happened. Local antifa infiltrates local news (probably with little to no resistance). He figured he could get away with it by manipulating the narrative through his news organization but someone else caught him on camera, hence the stupid look on his face when he sees it.
Space invader tattoo on the wrist is Antifa-ish as well.
Rumors: Austria antifa tattoo on shooter?