Mexico intends to take legal action against the Trump administration for failing to protect its citizens after six Mexicans were murdered by Patrick Crusius, a white supremacist with a deep hatred of Mexicans and Hispanics.

Crusius’ murderous rampage on Saturday at a Walmart Supercenter at the Cielo Vista Mall in El Paso, Texas also led to the wounding of nine other Mexican citizens. In all, Crusius shot dead 20 people and wounded 26 others in the eighth worse mass shooting in U.S. history.

The Mexican government of president Andrés Manuel López Obrador plans to charge Crusius for committing terrorist acts against Mexicans in the United States. It also wants to extradite Crusius to Mexico. It is also “asking respectfully but firmly that they [the Trump administration] take a clear, strong position against hate crimes.”

“We reaffirm our conviction that no one should confront social problems with the use of force or by inciting others to violence,” said López Obrador.

Crusius posted an online manifesto expressing his hatred and contempt for Mexicans and Hispanics 20 minutes before he went on his murderous rampage at Walmart.

Crusius wrote the influx of Hispanics into the U.S. is intended to replace aging white voters, a central belief of the “replacement conspiracy theory” or white replacement theory, prevalent among white supremacists. He also said this flood of Hispanics will turn Texas into a Blue State controlled by the Democratic Party and allow Democrats to win back the presidency from Republicans.

Crusius also wrote “Hispanics will take control of the local and state government of my beloved Texas, changing policy to better suit their needs." He also praises Donald Trump.

Mexican Foreign Minister Marcelo Ebrard said the country will take action under international law.

“Mexico declares its profound rejection and complete condemnation of this barbaric act, in which innocent Mexican men and women lost their lives,” tweeted Ebrard and translated by NBC News.

“The president has instructed me to ensure that Mexico’s indignation translates into ... efficient, prompt, expeditious and forceful legal actions for Mexico to take a role and demand that conditions are established that protect ... Mexicans in the United States.”

He said Mexico will ask U.S. officials how the weapon (an assault rifle) was obtained for the shooting. The Mexican government will also ask Mexico’s attorney general to consider charging Crusius for committing terrorist acts against Mexicans in the United States.

“As far as I know, this would be the first case of this type in history,” said Ebrard. “For Mexico, this individual is a terrorist.”

“Mexico is indignant,” Ebrard later told journalists. “But we are not proposing to meet hate with hate. We will act with reason and within the law, but with firmness.”

Martha Bárcena, Mexico’s ambassador to Washington, was livid at the attack.

“The intentionality of the attack against the Mexicans and the Latino community in El Paso is frightening,” tweeted Bárcena. “NO to hate speech. NO to xenophobic discourse.”

El Paso memorial
People leave flowers at a makeshift memorial outside Walmart, near the scene of a mass shooting which left at least 20 people dead, on August 4, 2019 in El Paso, Texas. A 21-year-old male suspect was taken into custody in the city which sits along the U.S.-Mexico border. At least 26 people were wounded. Mario Tama/Getty Images