Not every bad thing is terrorism. We must be very, very careful to use this term only when a strict, objective set of criteria are met. If not, everyone and everything objectionable to someone risks being branded a "terrorist", with the resulting damage to reputation, loss of due process etc. Public debate will then turn to a witchhunt, as opponents demonize each other through namecalling.
Now onto your question: How to end Political Correctness?
My idea is to refuse to take part in it. Never use loaded politically correct terms. Refuse to work within the rigid set of guidelines PC dictates. PC is only as pervasive as the number of people who willingly submit to it.
Next, publicize all PC BS. Show the public bad examples of PC in action. Finding them won't be very difficult, but finding a forum willing to showcase them will. Mainstream newsmedia won't do it, so find or invent other venues.
Finally, come at it from a 1st Amendment angle. PC is the brainchild of liberals, and they claim (in words only, seldom in deed) to be ardent defenders of free speech. Use the same arguments they use, verbatim, to defend speech that they don't want banned.
Hope that helps.