First, you ignored my request on context, and by context I don't mean one single video but what really happened and why.
Second, are they required by law to have "little tags" (what are those?) on their bikes? And if not is it a crime?
Ok. So maybe think about thing before you defend the people chaining others.
The violence is the chaining. One side didn't have little tags on their bikes. One side put the others in chains and threatened them.