Alberto Casillas became a national hero in Spain after a video of the 49-year-old waiter protecting demonstrators in his bar from police went viral.

Casillas became a symbol of the anti-austerity demonstrations in Madrid, in which 64 people were injured and 38 were arrested on Tuesday.

The video (above) shows dozens of protesters packed into the bar "Prado," where Casillas works. He stands in front of the riot police, holding his arms out to protect the demonstrators. He screams at the riot police not to enter the bar: "On my life, you will not enter!"

After his act of bravery, protesters immediately came to thank, kiss, and photograph him, saying: "You, you really deserve credit," reports La Vanguardia.

Since Tuesday, Casillas has been interviewed by the Spanish media, and became a trending topic on Twitter with the account @PorterodelPrado.

Casillas, however, is a supporter of Spain's current, conservative government.

"Let me be clear. I am in favor of the Partido Popular. I am a supporter and voter of [Spanish Prime Minister] Rajoy ... but on Wednesday it went too far,” he told El Pais.

"There were excessive police forces. I am for compliance with the law, but above the law, there is humanity. I did what I had to do, that’s all."

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  • A protestor holds a sign which reads, 'The Coup d'Etat is inside [parliament],' before a demonstration surrounding the Spanish parliament to protest against spending cuts and the government of Mariano Rajoy.

  • Spanish riot police fired rubber bullets and charged protesters as thousands rallied near parliament in Madrid in anger over the government's handling of the economic crisis.

  • A protestor demonstrates bare-breasted near the Spanish parliament during a protest against spending cuts and the government of Mariano Rajoy.

  • An injured woman lies on the street during a demonstration organized by Spain's 'indignant' protesters to decry an economic crisis they say has 'kidnapped' democracy.

  • Two indignados wearing masks.

  • Protestors perform and hold a banner reading: "Without fighting, what will you get?" as they prepare to march to the Parliament.

  • A protester holds a placard reading, 'For Sale - Spain.'

  • A protester wears glasses with the euro and dollar symbols painted on the lenses before a protest march toward the Parliament.

  • Protestors hanging from the windows during the demonstration at the Parliament against austerity measures announced by the Spanish government.

  • Protestor holds his hand up showing a caption reading, "The People for the People."

  • Protestors hold a banner reading, "You Don't Represent Us."

  • Protestors hold a banner reading, "Everyone Should Leave."

  • The owner of a bar argues with a riot police officer while demonstrators look for shelter inside the bar during the demonstration.

  • Spanish police in full riot gear kick a demonstrator during the march to the Spanish Parliament.

  • A couple of tourists try to get to their hotel trough a street closed off by Spanish police during the march.