They're trying to punish someone purely for exercising freedom of speech, or of the press, or the right of the people peaceably to assemble, and to petition the Government for a redress of grievances.

We all know the USA punishes its own people for that all the time, of course, but only when the current administration agrees with the ruling, which this one doesn't. It's not that the constitution can't be violated - it's that violating the constitution can be used as an excuse in cases like this one.