Yes, it is hard to believe that arming everyone to the hilt like a spaghetti western from the 1960s would add much safety to the situation. By arming more people, you'd also have more deaths due to previously responsible gun owners "snapping" as it were.
The one guy who had a conceal and carry on campus the morning of the college shooting here in Oregon, said he felt like if he had intervened he might shoot the wrong person or end up being shot by law enforcement himself.
The more love we can interject into the world the better, the more openness, the more free and open speech and entertainment, the more women's and general human rights we can win, the more good people stepping up and helping others and finding common ground, we can do the better. Those are true weapons against hate.