"We're gonna get this guy": Cops have 200 pics of Brian Thompson assassin as they give 5-word update

"we're" is one word.

"Gonna" is slang, but still one word. You'd probably be better breaking that into "going" and "to".

But still, the sentence is 5 words.

We are going to get this guy... 7

Anyway, the reported counted 4, not the police.

I assume you were trying to insult the police. (As much as i think thats cool, you have aimed at the wrong target)