"Haters" - term used by liberals/progressives to indicate anyone who disagrees with their views regarding those who generally uphold their values and/or vote Democrat. Also, those who don't buy into their sociopolitical views in general.
To disagree, to object to, to take issue with, takes on an unacceptable emotional onus when it is at odds with the progressive agenda. The same interpretation is never applied to those that agree with that agenda, no matter how charged with vitriol their objections obviously are.
Garnered From The Storehouse That Is Sloth Unleashed