As usual, you illustrate the very point I'm trying to make. As a characterization of the people currently in power - and their syncophants - who resort to attacking the so-called "agenda" of facts that do not support their questionable positions, that piece is deadly accurate.

petard - 1598, "small bomb used to blow in doors and breech walls," from Fr. pétard, from M.Fr. péter "break wind," from O.Fr. pet "a fart," from L. peditum, from neut. pp. of pedere "to break wind." Surviving in hoist with one's own petard (or some variant) "blown up with one's own bomb," which is ult. from Shakespeare (1605):

"Tis the sport to haue the enginer Hoist with his owne petar"
(Hamlet, III.iv.207).

-- Online Etymological Dictionary