This is incredibly dangerous, arresting an immigrant - with a green card (permanent residency) - over his organizing on behalf of a cause you disagree with. Arresting him and taking him to undisclosed location with no due process.
This is fascism, quite simply.
And you don’t have to agree with his actions or support his cause of protesting for Palestine. This is an opening salve and if they get away with it, they’ll go after people with any views they disagree with.