Is the sentiment detected in the input text negative?

Input: "Yeah, #JohnKerry said the Charlie Hebdo attacks may have had ""legitimacy"" or at least a ""rationale."" Dude needs to stop. #ParisAttacks"
"Yeah, #JohnKerry said the Charlie Hebdo attacks may have had ""legitimacy"" or at least a ""rationale."" Dude needs to stop. #ParisAttacks"