The wave of mail-bombs targeting prominent Democrats – though yet to claim any victims – has angered and dismayed some of the people personally affected by past acts of political violence in the United States.
Looking only at the past 60 years, there have been scores of deadly incidents motivated by some sort of ideology.
Perpetrators have ranged from Ku Klux Klan racists to members of the far-left Weather Underground to anti-abortion extremists who killed abortion-providing doctors.
The mail-bomb scare has reopened old wounds for Lisa McNair, whose life was shaped by a deadly blast a year before she was born: the Klan bombing that killed four black girls at 16th Street Baptist Church in Birmingham, Alabama, on September 15, 1963. Her 11-year-old sister, Denise, was the youngest victim.
- FOLLOW News24 on Twitter