Watch as rival Mexican lawmakers get physical in Congress over the 43 missing students

Things are getting more tense every day in Mexico. More and more people are taking to the streets to demand justice for the 43 students who went missing from the Ayotzinapa teaching school on Sept. 26, and protests hit a fever pitch Thursday night when tens of thousands of demonstrators swarmed el Zocalo, Mexico City's main plaza and historical center, and burned an effigy of President Enrique Peña Nieto. It was the 104th anniversary of Mexico's revolution. 

Mexican lawmakers are feeling that tension, which helps explain why there's now video of a near-brawl on the floor of la Camara de Diputados, the lower house of Mexico's Congress, where rival politicians literally jostled one another on Thursday over whom to blame for Ayotzinapa.

It all went down, according to el Universal, when a group of leftist lawmakers from the Partido de la Revolucion Democratica (PRD) took to the floor and raised a banner honoring the 43 students and calling for Peña Nieto ("ENP" on the banner) to resign.

That rankled deputies from Peña Nieto's Partido Revolucionario Institucional (PRI) and the Greens, who pushed onto the podium with their own banner that puts blame on the PRD, which was the party of the man who allegedly ordered the students' kidnapping — Iguala mayor Jose Luis Abarca.

It seems that lawmakers are definitely feeling the heat. But all this shoving and finger-pointing suggests they'd rather score political points than find justice for the 43.

Meanwhile, the protests build.

More from GlobalPost: 43 haunting portraits of Mexico's missing students, who are still waiting for justice