They infiltrated the movement and got people to turn to violence or committed it themselves and let Trump supporters take the fall. The vast, vast majority were peaceful, but the little destruction and violence was enough for both parties to smile, throw up their hands, act helpless and give the authorities cart blanche authority to target people. You seem very slow on this. If the government did this and targeted civilians without justification they're be a massive fall out, so they produce or encourage that justification so they can clamp down as hard as they want.