Finkelstein stated:
I think it would safe to say that Russell was a plagiarizer of many things. religious theologies as well of symbols from other organizations
including the Free Masons.
plagiarism
anact or instanceofusingor closely imitating the language and thoughts of anotherauthorwithoutauthorizationandtherepresentation of that author's work as one's own, as by not crediting the originalauthor
While Russell did adopt and adapt theological ideas from those who came before him, he did indeed many times credit those who came before him. Russell considered them to have been brothers in Christ.
Russell did, on occasion, also adopt some terminology from the Freemasons to illustrate God's secret society, the Christian church. This in no wise means that Russell was approving of the Freemasons, or any other of man's secret soceities, nor does it give us any reason to imagine that his use of the cross and crown illustration had anything to do with the Freemasons.
See:
I Am a Free and Accepted Mason
Russell's Comments on the Freemasons
Reply to: "Charles Taze Russell Founder of Jehovah's Witnesses Was a Mason"