“Be prepared for such actions to become less and less out of the ordinary.”
Many years ago Israel outlawed all weapons in an attempt to stop the Terrorists that were shooting up sidewalk cafes and restaurants.
They changed the laws and let citizens start carrying weapons. The next Tango that tried to shoot up a sidewalk cafe got shot by the patrons before it turned into a bloodbath.
We many not be far from that scenario in the US.
Not for another three years, at least (what with Obama in power).