To me Controversial simply means, "Being outspoken about subjects that others are afraid to openly admit"
Being politically correct, does this mean not making any one angry?
Some label politicians 'Controversial' for saying something or taking a stance on something.
People don't always like to hear what a politician has to say about
4. Healthcare reform
5. Foreign relations
10. Gun law
11. Human rights
12. Special interests
14. Military spending
etc.... and so on.
But even though some of the people running for the Commander In Chief at the White House have a controversial way of talking, then it's because politics in general are controversial in nature.
Image Credit » https://pixabay.com/en/barack-obama-official-portrait-1174489/ by janeb13