People are often arrested and released without charge. It's a tactic to get people out of a situation and sort it out later. I would have expected no less.
Arresting a news crew reporting on an event like this breaks significant norms (and possibly laws?).
Your assumption is 100% wrong.
I absolutely think this is a big deal but I thought it was important that people reading the article and comments were aware that the journalists had since been released.
We've got the rest of our lives to discuss this event but the most important thing -- the immediate concern -- is that the news crew was no longer in police custody.