Ensure that assault weapon sale and ownership be ban in the United States. We don't want to see another mass killing.

Of all rich countries, the US fairs the worst in the protection of its society despite the proliferation of guns. So we ought to at least honor the memory of the recent innocent dead.
80% of the kids killed by gun in the world are in the United States.
We have the capability to bring back some decency in our life by at least eliminating assault weapons from being used by regular citizens.
There is no statistic that demonstrates that anyone protected themselves by killing many bad guys at once.