I have a decent pre-ban data set. Let's see how FB did.
"Big Igloo Bois: you wanted a group so screw it here ya go" is gone. It was a private group with roughly 34,000+ members.
Smaller igloo groups are still in place.
Rhett E. Boogie was taken down a few days ago, and was replaced by new group with an altered name which has also now been removed.

This was one of its recent posts.
The page that started Rhett E. Boogie is still up and didn't care much for Facebook even before today's clean up.
Also gone:

Big-Lous Booze Cruze
The Boogie Bears
The Big Luau

Much smaller groups with the same name are still in place.
The Allegheny Rescue Co Group is gone.

All Cops Against the Boogaloo is still there. (shortens to ACAB)
Some accounts figure they're about to disappear and have already announced their backup accounts.
You can follow @jjmacnab.
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