Your reply seems disingenuous.
The person you are replying to did not say guns caused the tragedy. Rather the availability of guns in the U.S. is why we see school shootings every week in the U.S. and not in Europe.
The person you are replying to did not say guns caused the tragedy. Rather the availability of guns in the U.S. is why we see school shootings every week in the U.S. and not in Europe.