Not sure about what the OP is referring to, but striking may very well be seen as "terrorist" behavior if it turns violent. I.e. They're trying to "intimidate" and "scare" using violence against innocent people.
I worry about the consequences of labeling a large group of assembled people as "terrorists" based on the (real or perceived) actions or rhetoric of a few.
E.g., if a large group of angry protesters is staring down a national guard and shots are fired on the crowd, officials need only claim that the crowd fired first and thus the slaughter of "terrorists" might be justified.
E.g., if a large group of angry protesters is staring down a national guard and shots are fired on the crowd, officials need only claim that the crowd fired first and thus the slaughter of "terrorists" might be justified.