And they got Capone for tax evasion. Brushing off a conviction under 18 U.S. Code § 1752 -- which seems to be what people are being charged[0] with -- as "petty nonsense" is itself misleading, as it's the part of law that deals with "PRESIDENTIAL AND PRESIDENTIAL STAFF ASSASSINATION, KIDNAPPING, AND ASSAULT"[1]
[0] https://www.insider.com/all-the-us-capitol-pro-trump-riot-ar... [1] https://www.law.cornell.edu/uscode/text/18/part-I/chapter-84