Thomas Conrad, who had an economics class with Pierson, described him as very opinionated.
"He was exuberant I guess," Conrad said. "A lot of people picked on him, but it didn't seem to bother him."
In one Facebook post, Pierson attacks the philosophies of economist Adam Smith who through his invisible hand theory pushed the notion that the free market was self-regulating. In another post, he describes himself as "Keynesian."
"...I was wondering to all the neoclassicals and neoliberals, why isn't the market correcting itself?" he wrote. "If the invisible hand is so strong, shouldn't it be able to overpower regulations?"
Pierson also appears to mock Republicans on another Facebook post, writing "you republicans are so cute" and posting an image that reads: "The Republican Party: Health Care: Let 'em Die, Climate Change: Let 'em Die, Gun Violence: Let 'em Die, Women's Rights: Let 'em Die, More War: Let 'em Die. Is this really the side you want to be on?"