Political correctness makes sure we remain within societal boundaries that have been previously established. This helps us maintain the previous progress we have made regarding acceptance, equality and inclusivity. By directing people to be careful in their speech we help prevent negative polarisation and the acceptance of prejudices. This way we do not lose progress in tolerance and equality. The spread of hate crimes, extreme nationalism and prejudices can also be attributed to from lack of political correctness in politics. When people with a platform say bigoted things, the wider population sees these views as legitimate.
Society should the decisions it has made as to what is acceptable and what isn’t. We cant rely on the expectation that ideologies our society is built on are true or right. These ideologies must be challenged continually in order for us to progress. Political correctness removes the opportunity for us to open up debates on important issues that are "politically correct."