[javitury]

Perhaps the 80% figure refers to people who think that political correctness has gone too far in at least one topic.

E.g. 30% think PC has gone too far for topic A, 30% think the same about topic B and 20% think both topic A and B are negatively impacted.

[tptacek]

No, the 80% simply refers to responses to the question "political correctness is a problem in our country".