Yes this can be that it is not the first time.
But saying it is not the first time or
is not quiet the same.
Also school shootings do not happen only once. This does not mean they do not need to be called out and the person responsible for it to be held accountable.
Ind I feel in a two party system, the opposition has to bt the one to call them out. I would not know whom, when noone of the politics does it.