Earlier quoted context omitted.
Twitter is a business - they are not rounding people up for extermination. This is a poor, and hyperbolic comparison.
They are increasingly a major conduit for speech. Isolating people from Twitter isolates them from their inherent right to speech. This does two things a) sets precedence for future speech limitations and b) makes it harder for us to track people associated with terrorism. Both are bad since they historically lead to more violence.
I disagree - are you saying access to a social network like Twitter should be a human right?