Don Lemon did no such thing. He covered the event as is his right as a journalist.

I don't think you're well aware of what actually went on if you think this is what happened. Also, journalists don't have special rights. None of the rights in the constitution depend on you being employed by a particular type of entity. Unless you think a Fox News anchor has more rights than you do, for some reason?

You don't have a right to enter a private establishment as a journalist. You don't have a right to interrupt a religious ceremony under the banner of free speech. Don Lemon was up front, in the church, with his mic in the pastor's face, while the congregation was still there and the pastor had already asked them to leave.