snip: Vague language makes independent journalists, political, anti-war, and social justice activists, academics and students doing legitimate research, as well as others vulnerable to being called suspected terrorists.
The possibility could encourage self-censorship. Service providers may over-report to show compliance with the law. Online users could be flagged for using suspect words or phrases.
One definition of terrorist activity can be another’s way of describing freedom fighting. Legitimate government criticism could be misinterpreted and misused.
Anyone ideologically opposed to US policies could become vulnerable to arrest, prosecution, conviction and imprisonment for expressing their views online. Police states operate this way.