They normally use IPs that begin with "50.49.", but now they seem to be using IPs that begin with "45.", which can be seen in both of these diffs where they added excessive "see also" links: 1st diff & 2nd diff. Use this edit summary when reverting their unconstructive edits: Reverting unconstructive edits by the [[User:Beyond My Ken/Bad copyediting IP|Bad copyediting IP]]
Usually adds excessive "see also" links (e.g., here & here; many of the linked articles (as can be seen in the second diff) are too broad and unnecessary).
Copyedits articles, which in many cases involves oversimplification of language.
Often adds unnecessary links in article text (e.g., linking "20th century" (which is unnecessary) & linking "antisemitism" (which was already linked to earlier in the article)).
Doesn't communicate via talk pages.
Never uses edit summaries.
All three known IP ranges geolocate to Rochester, NY.
Mainly edits articles about race, war, and religion.