but, terrorism is not an opinion or a political description, it is a legal definition subject to existing common law precedent - none of which will be upheld in any legal proceedings on this matter, should they be attempted. these people will not be convicted of terrorism-related offences, and suggesting they ought to be is simple legal ignorance.
what these goofs did is called vandalism, not terrorism. and, they should be prosecuted for vandalism, yes.
but, labelling them terrorists is an insult to and a trivialization of the actual victims of actual terrorism, and should cease by all good faith actors, immediately.