No. When they are unarmed, it's the nighttime, the police are obviously trigger happy and launching tear gas at anything that moves; maybe that isn't the best time for the protestors to fight back. Things would only escalate, and more people would be injured or worse. Showing any kind of hostile activity, at that moment, I believe would be detrimental to their cause. I'm not saying bail on everything the protestors believe in, I'm just saying that that particular moment wouldn't have been the best time to fight back.
If the police are going to use a weak ass excuse to get away with shooting a kid, how hard will it be for them to justify attacking the protestors? I wouldn't give them a reason to. It's avoiding one particular situation in the grander scheme to get your side out and to prevail.