[11] In 2018, he joined the Social Patriot Movement, a nationalist organization often declared by the media as "neo-Nazi", notable for its opposition to the so-called "gender ideology" and globalism.

In April 2016, during a session of the Chamber of Deputies regarding a law about upping police security measures, Rivas referred to businessman Andrónico Lukšić Craig as a "delinquent" and "son of a bitch".

[15] Lukšić responded to the parliamentarian through a video on YouTube, where he summoned him to deliver the records he had against him to the courts, and analyzed the possibility of initiating legal action for said insults.

[22] Although Gaspar Rivas identifies with the Chilean right-wing in social values, he has been described as being more left-leaning in economic issues, advocating for a reform to the country's retirement pensions system and the nationalization of copper, Chile's main export.

[23] He has also advocated for reforming the Chilean education system, notably participating in the popularly-dubbed Penguin Revolution, even skipping congress to attend protests and rallies, even accompanying then-student leader and deputy Gabriel Boric, who would later become President of the Republic.

[24] A self-declared nationalist, he criticized the Chilean government for not "paying attention" to issues surrounding the indigenous Mapuche population,[25] such as returning territories to their tribes, which he has advocated for.