I don't know which part of the story you're missing or why you gratuitously call this guy a jerk. You should read the press release for a more detailed account of how this guy's case sounds a lot like Ramos' and Campeon's in terms of the government siding with the bad guys.
Those events are clearly over-the-top.
They go beyond the pretty harsh mutual ribbing (including in sensitive things, like religion, race, creed, and size of ears), which are part of the “esprit de corps” of any military or para-military (like the border guard) organization.
I got in one fist fight in the Army, and it was over some fellow soldiers (one who much later ended up being in my wedding, married my cousin he met there, and converted to Judaism!) getting drunk and doing nazi salutes.
They thought they were being funny, but we worked it out in the back of the barracks.