I think we can all agree this tragedy should have never happened. But to say that "if all guns were banned than this would have never happened" is foolish.
How many lives were saved in that school today because the teachers waited for the police to arrive and resolve the matter? ZERO
This is what the future holds for us if law abiding citizens are stripped of their rights to protect themselves and others.
The proof is slapping you in the face yet you refuse to accept it. Get over your agenda and look at what could have been, had the mother (the rightful owner of those firearms) been able to conceal carry in the school and protect herself and others.