Why are all mass murderers Democrats?

Why are all mass murderers Democrats? - Patriot Update:
"Liberals don’t respect life and teach an entitlement mentality. 
They think they deserve everything without working for it and when they don’t get it rely on violence for revenge. 
Liberals have created monsters.

THE LIST:
– Nidal Hasan – Ft Hood Shooter: Reg­istered Democrat and Muslim.
– Aaron Alexis, Navy Yard shooter: black liberal/Obama voter
– Seung-Hui Cho – Virginia Tech shooter: Wrote hate mail to President Bush and to his staff, registered Democrat.
– James Holmes – the “Dark Knight”/Colorado shooter: Registered Democrat, staff worker on the Obama campaign, #Occu­py guy,progressive liberal, hated Christians.
– Amy Bishop, the rabid leftist, killed her colleagues in Alabama, Obama supporter.
– Andrew J. Stack, flew plane into IRS building in Texas – Leftist Democrat
– James J. Lee who was the “green activist”/ leftist took hostages at Discovery Channel – progressive liberal Democrat.
– Jared Loughner, the Tucson shooter – Leftist, Marxist.
dem mass murder– Ohio bomb plot derps were occupy Wall St leftists.
– Harris and Klebold, the Columbine Shooters – families registered Democrats and progressive Leftists.
– Bill Ayers, Weather Underground bomber – Leftist Democrat.
– Lee Harvey Oswald, Socialist, Communist and Democrat – killed Kennedy… 
Why are no conservative NRA members involved in mass shootings?
Curious, isn’t it? 
So I was thinking, maybe we should just make it illegal for Democrats to buy guns?"