Earlier quoted context omitted.
They were deliberately destroying a cargo of tea that they didn't own...
Sure but that’s not ‘terrorism’ under most definitions
> the unlawful use of violence and intimidation, especially against civilians, in the pursuit of political aims.
Violence:
> behavior involving physical force intended to hurt, damage, or kill someone or something.
So, as the use of physical force intended to damage something for political aims, it seems definitionally "terrorism"