Unfortunately, such incidents like the one that is happening now at the VU don't get advertised enough (of course, right now, there is plenty of advertisement. But will that still be the case in 10 years?...). The people who lived through it will of course remember. But will a newly hired faculty be aware of the shameful past of a given university?
I suggest: Name and Shame.
Universities and math departments should learn that laying off tenured faculty is damaging to their reputation, and gets remembered for a long time.
Let's do this in the comments to this question!
Please include the name of the university, the year when it happened, and the number of tenured faculty that got laid off.
Following David Speyer's suggestion, I created a new MO question on the subject.
(Also, following people's criticism about the wording and tone of this reply, I have tried to phrase the new question, in a tone that is as neutral as possible.)