"I can't eat any gluten, okay?" - some Liberal
Liberals are a collection of people who have their hearts in the right place, but ultimately let their agendas get the best of them. A liberal will be against something if a conservative is for it and vice-versa. For instance, Conservatives have a firm belief that all americans should own guns and any american with a gun can stop bad things from happening; on the other hand Liberals think that no one should have guns, while not ignoring the fact that a lot of people who have guns are responsible individuals, they think that no one should have guns because Conservatives want everyone to be vigilantes.
Liberals will follow any reporting that's most popular, even if the study is flawed in a major way, as long as it furthers their own beliefs.