If it winds up being important in the view of historians, it will be taught.
I graduated from HS two years ago and had no idea what Ruby Ridge was until googling it just now. I was 6 years old in 1992. I'm supposed to remember that? Most "kids" today (I put kids in quotation because I'm not even a teenager anymore, and so kids would have to be those younger than me) didn't give a damn about what happened there when they were 6 years old or younger.
I ask you this:
Why should it be taught in class?
Also, what I think is a bad thing is that older people feel they're superior in some way to the new generations because they remember some obscure piece of history.