In 2007, a registered Democrat named Seung Hui Cho, shot and killed 32 people in Virginia Tech.
FALSE
Seung-Hui Cho was not a registered Democrat. Cho was born in South Korea and was a legal resident alien of the United States, which makes it exceedingly unlikely that he was registered to vote in Virginia. Furthermore, Virginia does not have partisan voter registration, so even if Cho had been registered, he would not have been registered as a Democrat.
As recently as Sept 2013, an angry Democrat shot 12 at a Navy ship yard.
UNPROVEN
Shooter: Aaron Alexis
The claim that Aaron Alexis was a Democrat can be traced back to an article published by The National Report, a fake news web site that has a long history of publishing misinformation:
National Report is a news and political satire web publication, which may or may not use real names, often in semi-real or mostly fictitious ways. All news articles contained within National Report are fiction, and presumably fake news. Any resemblance to the truth is purely coincidental.
We found no record of Aaron Alexis being registered as a Democrat. However, a co-worker of Alexis did say that the shooter was more of a liberal-type guy:
Aaron wasnt conservative, like I am, Ritrovato added. He was more of a liberal type.
He wasnt happy with the former administration, he continued. He was more happy with this administration, as far as presidential administrations.
Politics, however, were not the motivation behind the attack:
The government contractor who killed 12 people at the Washington Navy Yard last week was driven by delusions that he was being controlled by low-frequency radio waves and scratched the words End the torment! on the barrel of the shotgun he used, the FBI said Wednesday, offering new, chilling details of the attack.
In 2011, a registered Democrat named James Holmes, went into a movie theater and shot and killed 12 people.
FALSE
The claim that James Holmes was a registered Democrat stems from a Breitbart article that was based on the voter registration of a different man named James Holmes. The article was eventually updated to state that Holmes may not have been registered to vote at all:
Newly-released information on the suspects birthdate (which, as indicated in our initial report, was a slight mismatch), combined with new details Breitbart News has obtained about the suspects likely addresses, together suggest that the suspect may, in fact, not have been registered to vote.
ABC News made a similar mistake when they tied Holmes to the tea party. That report also resulted in a correction:
An earlier ABC News broadcast report suggested that a Jim Holmes of a Colorado Tea Party organization might be the suspect, but that report was incorrect. Several other local residents with similar names were also contacted via social media by members of the public who mistook them for the suspect.
We found no record of Holmess political affiliation, if he indeed had any.
n 2010, a mentally ill registered Democrat named Jared Lee Loughner, shot Rep. Gabrielle Giffords and killed 6 others.
FALSE
Jared Lee Loughner was a registered as an Independent in 2006 and did not vote in 2010.