I must respectfully disagree with you, Vox, and evidently a lot of others. While I generally agree with Hirono about Barr, I cannot support the grandstanding. It may make us feel self-righteous, but I don't think it actually accomplishes anything.
Barr was there so that we could learn more about the goings-on with the DOJ, the White House, and the various investigations. Instead, we heard Hirono's opinions.
Look at it this way: Did we learn more from Hirono's 5 minutes, or from Harris'?
IMO, we can learn a lot more from a non-answer than from a non-question.