I love how the msm feels the need to specify that the protests that resulted in Police cars bring burned, stores bring looted and cops being shot were "peaceful protests" up until the incident. Imagine if they talked about the Charlottesville rally as largely peaceful until the deadly car attack.
A "violent protest" is a clear concept that means something. You can very easily imagine a peaceful protester with the most awful things written on their sign. And you can imagine the most violent rioters being inspired by the greatest message.