There's an overly enthusiastic editor going crazy and editing lots of titles, sometimes changing the meaning of posts. What's the best way to flag an edit?
You can always flag for a moderator; if needed, flag the post/reply, and just indicate (in the text) which edit you are referring to.
For info, I'm aware of some of the edits in question, and I'm not entirely convinced that they are as destructive/context-changing as you suggest; but if you flag something, we'll look into it. You can also e-mail the team directly (page footer).
I say that every time someone has an issue with something He Who Shall Not Be Named has done, they flag for moderator attention or email email@example.com instead of posting a new question on the Meta in hopes of stirring up the hornet's nest all over again.
All this is doing is trying to get as many people with axes to grind against He Who Shall Not Be Named (whether rightly or wrongly) so that their voices can all sound louder when bounced around the echo chamber.
Edit: I would make the argument that constantly posting on the Meta every time you have an issue with He Who Shall Not Be Named is pretty childish, honestly. All you are doing is playing the victim card (and I make this out to everybody who makes this exact same type of question, not just the OP of this one) trying to draw even more attention to the situation, which is inevitably going to lead to it causing even more of an uproar.
All you are doing is trying to elicit some type of public scolding/humiliation for He Who Shall Not Be Named instead of asking an actual question, and the moderators and the team have been pretty solid in how they choose to deal with these things. BEHIND THE SCENES. Airing your dirty laundry out in public is not the appropriate way of handling these situations.