What's troubling to consider is that the casual nature of their brazenness really does indicate that they believe either they are doing nothing wrong, or that they are just that unconcerned with the law. During the George Floyd riots, you knew that the BLM people who protested in the morning were a bit different than the people who came to attack at night. This indicates that the people at night knew they were breaking the law. By contrast, these people, in the attack on the Capitol, were so unconcerned with law and order that they didn't even consider hiding. Things like ID tags never even crossed their minds.
I think most people underestimated how stupid hard core Trump supporters are. 90 percent couldn't tell you the square root of 4 or name a single city in India.