@alex TBH, I disagree.
Ghandi and MLK set the precedent of activism being peaceful. If you deviate from that path, and either perform acts of offensive violence (attacking rather than self defense), or support them, that is clearly terrorism.
It is only the "go punch Nazis", or certain factions of the antifa and/BLM crowd (although BLM isn't that relevant anymore) that I find supports such terrorism... perhaps I am missing something and this is more widespread than I had thought.