I feel as if there's a concerted effort to spread internecine conflict and sectarianism within the liberal community - to divide.
However, I have to agree with you here: words matter, and it's not a good look for Bernie to skirt the issue, deflect, and thereby sugarcoat what's happening.
"Horrific" is a weaker word than "genocide." It's absolutely sugarcoating to call genocide by a weaker word.
He hasn't used the term "war crimes" yet, either, has he? Thing is, as long as he avoids using these terms, he gives a legal and moral pass to the people perpetrating the crimes.