A study of 377 people whose backgrounds were analyzed found that a majority were not the poor angry young men who used to join extremist movements. Most (67 percent) were over the age of 34, 85 percent were employed, 30 percent were white collar, and 14 percent were business owners. Only 12 percent belonged to formal extremist groups. They came from 41 states in all regions of the country. In other words, they are broadly representative of white America. In one respect, though, those arrested were typical of those who join extremist groups: the vast majority were men. Only 45 women have been arrested for crimes allegedly committed on Jan. 6.