Thank you for responding. When a crime has been committed, the last thing you want is for the perpetrators to benefit from the crime. The most important action to be taken is that of restoring the damage that was done through the use of illegal activity. In a civil society, concerns of punishment are secondary to that of fixing the problem.

In this case, User:Chaosfeary has been punished with a 72 hour block that could become indefinite, but the damage he did has not been reversed. By punishing the user while allowing the crime to continue, we are telling editors that they can ignore the rules at Wikipedia in any heavy handed way they want and that, even if they are caught, the results of their criminal activity will remain.

In this case, we can undo the damage simply by restoring the "American terrorism" article. The article needs a great deal of work, of which I am happy to oblige, but the term "American terrorism" definitely exists in usage and has nothing to do with the made-up "umbrella term" "Terrorism by the United States of America"