The people who were rioting or doing other seriously illegal things without hiding their identity weren't being too smart.

But I understand the people who just walked in without covering their face. For those people, it was a simple act of civil disobedience. Generally people do show their face while engaging in acts of civil disobedience and accept the possibility of being arrested. No one says "LOL Rosa Parks, what an idiot. She should have worn a hat and wrapped a scarf around her face before she sat on the bus. Then she should have gotten off at a stop before they could arrest her. But the idiot got caught LOL".