Earlier quoted context omitted.
A protest becomes terrorism when it prevents access to vital services (eg "picketing" a hospital and not allowing ambulances in/out)
So if a bunch of hospital workers were protesting their pay and formed a picket line around a hospital, their purpose would be to 'instill terror?' Somehow this comes across as adding to the dilution of the word 'terrorism.' Do you really think that picketing a hospital is comparable to using guerilla tactics against a civilian population? I'm not agreeing that people should be allowed to prevent access to a hospital…
Terrorism is using force or the threat of force against a population to achieve political or economic goals. That is chapter and verse what Anon is doing with these threats.
There are (obviously) degrees of terrorism. Hitting buildings with planes isn't the same as sending a few letters with anthrax in them. But both are terrorism.