So, if I get this properly, there was more evidence to arrest everyone at 0bama’s inauguration than 180 people at Twin Peaks.
And I don't think anybody bristles at the arrest of people for conspiracy, when there is evidence of conspiracy. That's pretty common too, see wannabe terrorists who were planning to bomb, or shoot up, or mentally-twisted kids who plan and agree to harm people in a school, and so on and so forth.
What's interesting (but garden variety common on FR) is that some people don't bristle at the arrest of people without evidence to support the accusation.
-- there was more evidence to arrest everyone at 0bama's inauguration than 180 people at Twin Peaks. --
As alluded to above, it's a mixed bag. The law is supposed to treat each person as an individual, even when the crime is one of association (it is criminal for an individual to aid or join groups that fedgov has identified as terrorist, e.g., Al Qeda, ISIS).