I informed him the internet is still free. When you post in a public forum you face many risks. This person who sought to troll me about gun control attempted to threaten me. I have little respect for trolls who lawyer up (Zimmerman style) when getting ass kicked. As I explained to the person, he/she had two choices call lawyer to get understanding of laws or start scrubbing his/her tweets.
What he/she fails to understand is a lawsuit over his/her tweets to me(while trolling) would increase my readership and allow me to be able to blog full-time without having to work my 60 hour weeks.