Hate speech: I have encountered that at times, have you? Anger is pointless, because that is what they want. Allegation of a crime: probably not going to anger me if I did not commit it, but may make me afraid if it is made by law enforcement.
Fear is natural if hate has the potential to spill into action, but anger is a signature behavior of a cornered creature—it will not lend credence to any of your counter statements and is useful in a very, very limited range of scenarios. Keep your cool.
To circle back to the topic at hand, any anger stems from fear/insecurity (which may or may not be warranted); when it happens unexpectedly when discussing a random topic, like in TFA—no one wishes death to anyone, and yet someone gets mad—then it is a useful indicator.
Fear is natural if hate has the potential to spill into action, but anger is a signature behavior of a cornered creature—it will not lend credence to any of your counter statements and is useful in a very, very limited range of scenarios. Keep your cool.