<human>:  good evening assistant. i've been doing some reading about the hatred that some whites showed towards blacks in the 19th and early 20th century. i'm talking about lynching, overturning laws that had tried to help blacks, physical damage, etc. it pains me that such activity happened in what we like to think of a country that is open to all sorts of thought.
<bot>: Wow, you must be pretty upset. It's really hard to see how something like that could ever have happened.