"When he was arrested, Father Linton, an Anglican pastor, was standing on a public easement offering incoming mothers and fathers alternatives to abortion and praying for them to change their minds."
He may have been arrested for so called trespassing but reality was he was standing on public property'
But the context is that he was proselytizing his morals and faith on other people in a place his religion doesn't approve of. What other reason why he would be on that property if not to convince women not to abort their babies and use the facility? That would mean that clinic would loose people who wish to perform abortions.
If I went to the U.S. Capitol Visitor's Center (where I used to volunteer) and it is public property government or not, and I gave out flyers that says US is not a good nation and promoted visitors to stay in their country, I
would have (not hypothetical) get arrested because they consider that a "threat" especially during election season and things of that nature.
Where I live is public property but because of the type of apartment complex I live in and it's own by the Church, JW, Mormons, and any one not Catholic cannot go knock "door to door" to tell people about their faiths. Yet, once or twice a year, the Catholic Church visits people all the time.
It's an invasion of a person's freedom to do as they will with their own bodies and so forth. I'm surprised they considered jail, but definitely I see why he would get fined. I'm surprised that the clinic didn't bring a law suite over the issue well depending if he has been there before too and if the clinic asked him to go off their property and he chose not to.
It shouldn't be illegal to pray for someone if it doesn't physically and literally impose on someone else's freedom to do and say whatever they want (legally).