Earlier quoted context omitted.
So, Tor is only as good as the person using it. I urge caution against amateur investigations, but it'd be interesting to see what software tools could be written to help law enforcement do a better job. Statistical analysis of text "social web" etc.
Just be careful, if you get too god at this it might be used for things you don't agree with. This is an area that I would steer completely clear of, the same way I'd never help develop chemical or biological weapons.
You'd have missed out on the opportunity to work with Feynman if you'd declined work at the Manhattan Project.