Any docs about trolls being caught?

Explain yourself. What Internet troll are you speaking of?

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Of all the things I've lost, I miss my mind the most.

I'm probably not going to be useful here because I can't remember a title or where I even saw this (I believe it was the internet). There was a video where a reporter or someone confronted a racist troll about something he was saying online. In that country it was illegal to make racist remarks but I still don't think he got in trouble.

That's an interesting idea for a show... Find the worst, most annoying internet trolls and bring them out of anonymity.

The only one close to your description that I know of is about a CAtfisher that was also a troll. She wasn't confronted face to face but it was a crazy sick story. called "talhotblonde".

Trolljägerna:

http://www.imdb.com/title/tt4569848/?ref_=nm_flmg_slf_4

This Swedish series has Robert Aschberg confronting people who have made politically incorrect remarks on the internet. In Sweden this is serious business since it can cost you your job.
In reality, Aschberg is a communist/left winger who is trying to intimidate his political opponents. He even poses with a baseball bat.