This article is super hard to follow, they mention a stabbing this year and lacerations to a cop's face this year but then say that they kettled and arrested everyone in the area after a stabbing... this year? So was anyone stabbed this year or was it just preemptive because of last year?
And was the police's stated goal to disperse everyone, or kettle and arrest everyone? The article makes it sound like both.
Either way seems excessive, charging everyone in the area with rioting. These seem like unruly skaters who mostly want to skate.