For Sandy Phillips, watching the Paris bloodbath unfold on television brought back memories of the night her daughter was killed when a gunman opened fire on a packed movie theater in suburban Denver.
She says so-called "soft-target" attacks have already happened in the U.S. and that leaders should focus on the much greater threat of gun violence. Terrorism has accounted for only a few dozen deaths since 9/11, while more than 215,000 people have been murdered since then.
Experts say Americans tend to see mass shootings as isolated events, while violence inspired by ideology creates more fear.