In 1854, Americans witnessed a historical first when they saw the creation of the anti-slavery Republican Party. What made the Republican Party different from other anti-slavery political organizations that have been around for many years is that no one could have imagined that a president could have been elected on an anti-slavery platform. That was huge at the time.
Political hatred is nothing new in American History. There have always been haters. And yes, my friends, on April 15th, 1865, a lot of them were Democrats who danced when they found out President Lincoln was shot to death.