[helen___keller]

I don't know who "they" you are referring to (plenty of organizations covered the violence...) nor why they would not cover the violence in the protests but consider the following possibilities:

1. Executives at the news agencies told the reporters to cover the protests favorably for corrupt reasons

2. The news reporters and camera crew were at the protests for several hours and genuinely got a lot of footage of peaceful protests; the violence happened at 2 AM when most protestors had gone home, and were both not filmed by the camera crew and seemed unrelated to the protest that the camera crew had covered

3. Most of "them" did in fact cover in the violence in some amount, maybe less footage or less coverage then you think is appropriate but some amount of coverage nonetheless. However, because "they" are an unspecific and presumably large number of media channels that run all day long, you probably weren't watching all of the coverage and you might have missed it (or the sources that tell you "they" didn't cover the violence hadn't mentioned that they actually did cover it a little)

I can't tell you which is true between 1-3, because I don't know who "they" refers to, and I know I don't watch "them" anyways because I never watched mainstream coverage of the protests. Just some food for thought, again that we are quick to turn to instant distrust before we apply nuance and consider the alternative.