Yes, every Christian should blacklist any Christian leader (however famous he may be) when he sides with a Jewish leader.
It is important for Christians to target Christian leaders who are favorable to Jews, because the Book of Galatians demands this.
The Book of Galatians called pro-Jewish “Christians” as preaching “Another Gospel”.
St. Paul said that pro-Jewish “Christians” (Judaizers) will go to eternal damnation in Hell, even though they are preaching the “Gospel” every Sunday in a Christian church, because they are empowering Jews and weakening the Christ-centered Gospel.
In the same way, American and British Christians must blacklist any Christian leader who stands with Jews who do not respect Jesus Christ as God and Savior.
There are traitors in our midst, and these are leaders who side with Jews and give Jews power to destroy Christianity in America.
It is a duty for all those who love Jesus Christ to stop the traitors who want to empower Jews in America and in the United Kingdom.