True, but the risk of dying at the hands of these people is extremely slim. According to tabular data found here[1], which chronicles US terrorist incidents and assassinations dating back to 1865, only 5031 people have been killed by terrorists in the last 148 years. That comes out to approximately 34 deaths per year!
That number is trivial compared to other causes of death. Here's a sampling of some death statistics from the year 2006 [2]:
Fireworks discharge: 8
Fall on and from stairs and steps: 1,818
Bitten or struck by dog: 32
Contact with venomous snakes and lizards: 8
Accidental drowning and submersion: 3,579
Exposure to electric transmission lines: 93
Transport accidents: 48,412
Contact with hot tap-water: 32
Terrorism: 0
You're more likely to be killed by hot tap-water than you are by a terrorist.
That number is trivial compared to other causes of death. Here's a sampling of some death statistics from the year 2006 [2]:
You're more likely to be killed by hot tap-water than you are by a terrorist.[1](http://www.johnstonsarchive.net/terrorism/wrjp255a.html)
[2](http://www.nsc.org/news_resources/injury_and_death_statistic...)