Terrorism is an act of violence committed against random, innocent people in order to instill fear among the general population and in pursuit of a political aim. BLM and ANTIFA burning down the businesses of innocent people is definitely terrorism in action. Mowing down people marching in a parade if definitely terrorism.
Assaults against government cannot be terroristic by very definition. The only term that could possibly apply would be guerilla warfare, if, and only if there was actual warfare involved. In this particular case, there wasn't and so we should be looking towards other, more accurate terms to apply. The term "insurrection" is certainly deceptive and politically motivated as there was no attempt to overthrow the government, and so at best this could be called a riot or an extreme case of civil disobedience.
Ted Cruz is usually more careful when using words, and he messed up here.