Progressive lawmakers say the reaction to the UHC CEO killing is a 'wake-up call' Business InsiderAnger After UnitedHealthcare CEO’s Killing Rattles Health Insurance Workers The New York TimesUnitedHealthcare CEO shooting is the 'next wave' of 'Occupy Wall Street 2.0,' law enforcement trainer warns Fox NewsSteve Forbes scorches Elizabeth Warren over CEO murder comments: Shows ‘moral rot of the left’ Fox BusinessVideo: Ex-insurance exec says he’s not shocked by rage people have after CEO killing CNN