A "polemic" is a speech or piece of writing expressing a strongly critical attack on or controversial opinion about someone or something. It can also refer to the art or practice of engaging in controversial debate or dispute. What does that have to do with this cache. Nothing.
Bring a TOTT and look at the attributes. I am too old to climb a tree, so this will have to do.
Ybbx hc. Vg'f rnfvre gb ercynpr gur pnpur vs lbh cynpr vg fubeg fvqr hc orsber chggvat vg onpx vagb cynpr.