Flores-Sumera, aged 45, was killed by a lone gunman as she was leaving home for work.
Since the Newtown attack by a lone gunman, Connecticut and a few other states have passed tougher gun laws.
Feinstein contended her proposal would prohibit the kind of weapon used by a lone gunman in the Connecticut shooting.
In 1995, a lone gunman shot dead Burundi's Energy and Mines Minister Ernest Kabushemeye in the nation's capital, Bujumbura.
Focus on the general risk of troubled teens, and not the specific threat of a lone gunman wandering around a school.
Then, on Dec. 11, a lone gunman shot dead Moshe Nahari, a father of nine and well-known figure in Raida's Jewish community.
Crabtree first ran across the issue following the Virginia Tech shooting, in which a lone gunman, a student, killed 32 people.
Following the Newtown shootings by a lone gunman, Obama called for a series of proposals including "universal" background checks on all gun purchases.
On Monday, the couple joined other Sandy Hook families to mark one month since the attack, which was carried out by lone gunman, Adam Lanza.
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While it is not clear what motivated the lone gunman or from what disease he suffered, if any, few think he could have been right in his head.
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That night, 12 people were killed and 58 more injured when a lone gunman opened fire in a cinema in Aurora, Colorado, during a midnight screening of The Dark Knight Rises.
"What we know is that at twenty past eleven last night, Kieran was with a number of friends when he was shot at short range by what we believe was a lone gunman, " she said.
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Although the common perception is that Mr Taseer was assassinated for his outspoken views on the blasphemy law in Pakistan, it would be very short-sighted to assume that a lone gunman decided to execute him for this reason alone.
Installing metal detectors at movie theaters doesn't make sense -- there's no reason to think the next crazy gunman will choose a movie theater as his venue, and how effectively would a metal detector deter a lone gunman anyway?
Christian Fraser says the leaked report does not dispel French police's current working theory that the gunman was local and a "lone wolf".
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