It's pretty obvious that they do not want to go into detail on anything that would paint the actions of the past two weeks in any negative light. There's no positive way to spin losing control of multiple city blocks, including a police station.
Bias does not have to be a slant in an articles content or writing style, though that happens as well, e.g. including phrases like "mostly peaceful protests" in articles describing looting. It can also be as simple as not reporting things you do not want to publicize.