Mahmoud Khalil was arrested solely on the discretion of Marco Rubio (the arresting agents thought they were revoking his visa when he is in fact a green card holder), he has not been criminally charged, he was been provided with little to no contact with his lawyers, as far as I've read he lead protests but there is no evidence he has provided material support to Hamas.
Comparing his situation to the January 6th protestors is the "falsest" of false equivalences.
Mahmoud Khalil has broken no laws, at least according to the accusations of the government. He hasn't even demonstrated support for Hamas...and it wouldn't be illegal even if he did. All he has done is said something that some people don't like. That is not a crime.
That's why this is egregious, where J6 protest convictions are completely logical and morally consistent.