I can't help if you don't understand the US law.
That case was a supreme court case. Not your local one.
But you knew that as you read it?(Maybe not)
"federal law, anyone who "with the intent of influencing any judge, juror, witness, or court officer, in the discharge of his duty, pickets or parades in or near a building housing a court of the United States or in or near a building or residence occupied or used by such judge, juror, witness, or court officer" could be fined or imprisoned."
https://www.law.cornell.edu/uscode/text/18/1507 "18 U.S. Code § 1507 - Picketing or parading"
I know that from living there....and please stop trying to be an american. You wouldn't last a day
And these peaceful protesters are threatening to kill people via letters.