I wouldn't consider it inherently an emotional response. Someone can simply reason that 30,000 lives lost to guns is unacceptable. Many believe that gun control will reduce that number thus they support gun control.
Is the desire to prevent death emotional? If it is then aren't we all guilty of it?
Ignorance of facts by misinformation is not inherently emotional. Remember the video of the politician holding up an AR-15 saying it could fire 30 rounds a second? Someone can look at that video and decide that it is simply too dangerous, not out of emotion but out of their reasoning, but in the end they based their position on inaccurate data. Nuclear weapons shouldn't be in the hands of regular people, and I can arrive at this conclusion without emotion. Someone who is pro gun control may believe, though misinformation, that gun control would solve our violence problem. This doesn't mean that person is being emotional about it just because they choose wanting to solve our violence problem over protecting our rights.
Is the desire to prevent death emotional? Not by itself. But when the proposed solution is to (1) infringe on everyone's rights due to abuses by a mathematically insignificant subset,
and (2) creating laws that would have prevented 0 (zero, nada, none) of those deaths, then, yes, it is an emotional decision.
Every one of Obama's appeals is emotional:
We are the only advanced country with these kinds of mass shootings.
The NRA resists these common sense laws, even though 90% of their members say different.
30,000 shootings per year ....
The only reason for a 30 round magazine is to kill lots of people as quickly as possible.
Nobody needs an AR-15, which is often the mass murderer's weapon of choice.
We need universal background checks to prevent guns from being in the wrong hands.
Whether the statement is true or not is irrelevant. He would not have said any of those had they not been geared toward fear and emotion.
Democrats operate on emotional pleas. Facts turn people off, but emotions drive them to the polls!