That is a common enough reaction when you find a place where you disagree with somebody. My usual reaction to such a situation is to try to reason with them and get them to look at the issue from my perspective.
Alternatively, perhaps they can present me with information I did not know and therefore cause me to change my mind.
We have too little debate in our society, and too many emotion driven arguments.
I read up on this case, a lot, when if first occurred. I even found a copy of the police report before it was scrubbed from the internet. Our views of what happened are to far apart to even begin debating.