For me, a lot of it has to do with how it's presented in schools
Pi, for example. One day my teachers just kind of dumped this magical 3.14... number on me without any real explanation. Just basically "use this number to do stuff with circles," no real explanation on what pi actually is on anything, just "remember this"
Years later I found a gif of a circle sort of unraveling that showed how the circumference is π × the diameter of the circle
And sure, mathematically, the formula tells you that, but actually seeing that animated out made a hell of a lot more sense to me.
Now I got most of my basic math education before those gifs were so readily available, and smart boards were just becoming a thing when I was in high school, so it would have been a little hard to show that to a bunch of elementary or middle school students without having us huddle around a desktop.
But that's something that could have been illustrated pretty well with a couple circles of different sizes (cardboard cut-outs, printed on paper, different jar lids, etc,) a piece of string, and a ruler.
And the same goes for a whole lot of different math things.
Something about Chabad-Lubavitch and Brooklyn rang some bells for me, which isn't normally the kind of thing that would catch my attention, so I figured I must have seen something particularly weird about them in the news in the not-too-distant past.
And only one weird story from New York about Orthodox Jews comes to mind for me personally, and sure enough it was Chabad-Lubavitch that was involved in the Synagogue tunnel incident
Not that I think there's any direct correlation between these two incidents, I'm mostly just bringing it up for anyone else who had the same "why does that name ring a bell" feeling.