i don't know about "most often": it's also used by the far left to attack the "soft liberal middle" -- in fact this is the form i first got used to fending off (ok "most often" if you agree there are more "right" than "left" these days; but it wasn't always the case -- you could easily characterise the post-war hayekian or popperian counter-assult on the left as a re-institution of PROCESS against judgment-by-dogma)

lately the right has got extremely effective, while calling foul on the corruptions of the alleged objectivity of the institutions making claims for trhings they want to challenge (viz darwinism, global warming), at calling for equal time for all sides in all undecided debates -- this is certainly a bad-faith gamin of the ref if yr a fundie, but it's not as if fundies don't believe darwin's wrong, they just think the right information hasn't been gathered and presentyed yet

the claim "innocent until proven guilty" is a good chip in the wind: is "we haven't had the argument yet" DUE PROCESS or a FILIBUSTER (and who gets to adjudicate the process)