I think that there is a fundamental problem in America that can compared to the actions of Muslim terrorist though. Roughly 68% of gun crimes are committed by people associated with the Democratic Party.
Aside from the recent democide attempt by Liberal trump hating James Hodgkinson against many gop lawmakers at a baseball practice. Here are a few more examples of liberals showing their similarities with radical Muslims and their inability to deal with reality so they instead try to destroy that which they disagree with.
Ft.Hood shooter Nidal Hasan - Democrat, and muslim
Adam Lanza - Liberal, hated Christians
Columbine High School freaks - too young to vote but came from very liberal families
Virginia Tech shooter, Seung-Hui Cho - liberal freak
Virginia Tech decapitater - liberal
Colorado Theater shooter James Holmes - liberal
Live on air Roanoke VA TV station shooter Vester Lee Flanagan - liberal
Navy shipyard shooter Aaron Alexis - liberal
Arizona Gabby Giffords shooter Jared Loughner - Liberal, hated Bush
The DC snipers back in 2003 - Liberals
Chattanooga TN Marine Recruiting center shooter - Muslim democrat
Ted Kaczynski (the Unabomber) - Leftist

Want more examples of the violent left?...

Lee Harvy Oswald (JFK) - Marxist (hard core lefty)
John Hinkley (Reagan) - Democrat
John Wilkes Booth (Lincoln) - Democrat
Lynette 'squeaky' Fromme (Gerd Ford attempt) - Liberal
Sir Han Sir Han (RFK) - Liberal
Bill Ayers - US domestic terrorist - Liberal
Bernadine Dohrn - US domestic terrorist - Liberal
Black panther party - leftist based organization
Occupy Wall Street - over 8,000 arrests, 3 murders, 2 arson, 10 plus reported rapes - a hardcore leftist movement
KKK- was spawn from democrats
Eradication of Jews 1940's (holocaust) - Hitler a member of the National Socialist Workers Party aka a hardcore leftist.
Planned parenthood - a leftist organization, created for the sole purpose to eradicate blacks, (do some research on Margaret Sanger)
Slavery - Democrats were proponents.