From the description:

As myself and other media were attempting to get to action. We were approached by this officer, Ray Albers of the St. Ann PD, who was wildly wielding his gun.

It’s not the “go fuck yourself.” Frankly, I’m surprised that hasn’t happened more. It’s the “I will fucking kill,” that really says it all here.

https://twitter.com/shariline/status/502162415342346240

Time to pull this guy from the line before he does something terrible. Here’s an alternate view of what happened.