This was your original claim. You are implicitely withdrawing it and moving the goalpost to "evidence of substantial violence"(which is ok, but it was so easy to rebate in its original form that couldn't resist). BTW, states have the monopoly of violence which makes the comparison complicated to asses to anyone who believes in representative democracy and the separation of powers(policemen were trying to execute a court order, no less and no more).
You can keep your 500$, I already knew you were bluffing.
Regarding the issue you are bringing. Yes, the police intervention was a massive clusterfuck. It was impossible to stop the so called "referendum" without the complete cooperation of catalan police and the civil guard and national police cops were sent to an impossible mission. Some of them misbehave, probably out of frustration and fear/anger. This is something a policemen should never do.
If that's your point I could agree.