be of the opinion
have an opinion

Making his case in the court of public opinion is another matter.

In the court of public opinion, he had already lost.

Whether you can make me talk is a matter of opinion.

And after about five minutes of our opinion, then we ask you a question.

However, much of the public opinion was on his side.

"Are you about to ask me for some kind of a medical opinion?"

Can he win this in the court of public opinion?

But that is not likely to matter much in the court of international opinion.

In the court of public opinion, it didn't matter what happened from here on out.

Are not you too of opinion that we see all things in God?