nah there are many ways to limit police. Filming them is the obvious one, in more or less everyone's power in the West. If it were ineffective, why do they react so negatively to it in so many cases?
But I do "tech"nically agree with tec... passing laws is a questionable way to fix problems. If someone does submit a bill, you can sometimes use it as an opportunity to generate debate. Or, in our case, remind people that there is a liberty struggle going on in new hampshire and that they are invited to move here and join it.