Anderson Lee Aldrich was already serving five life sentences for the gun rampage at Club Q in Colorado Springs that also injured 22 people.

A US district judge added a further 55 life sentences and an extra 190 years to that tariff after hearing how Aldrich specifically targeted members of the LGBTQ community with a $9,000 arsenal amassed over two years.

"You went to this community's safe place and mass-murdered people, but I hope what you learned today is this community is much stronger than you," Judge Charlotte Sweeney said, noting it was appropriate to sentence Aldrich during Pride Month.

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"This community is stronger than your armor, stronger than your weapons, and it's sure as heck stronger than your hatred."

Federal hate crime charges carry stiff penalties in the US, and people convicted of them can face the death penalty, but prosecutors agreed to take that off the table in return for Aldrich's 74 guilty pleas.

Aldrich walked into Club Q on November 19, 2022, shooting five people dead with an AR-15-style assault rifle. Two patrons of the club eventually wrestled the heavyset and bearded shooter to the ground, detaining Aldrich until police arrived.

In court filings, federal prosecutors said Aldrich vented online before carrying out the crime.

"The defendant used an online platform... to disseminate a manifesto purportedly authored by someone who committed a mass shooting earlier that year," documents said.

"This link revealed predominantly racist and antisemitic beliefs but also the following statement, 'Transgenderism, however, is a mental illness and should be addressed as such.'"

A week before the shooting, Aldrich posted a photo depicting a rifle sight over a pride parade with the comment "lol," the document said.

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Matt Kirsch, Acting US Attorney for the District of Colorado, told reporters after the sentence that Aldrich had admitted what lay behind the horrific acts.

"As part of today's plea, the defendant admitted to committing acts of hate against members of the LGBTQIA+ community," Kirsch said. "I want to make it clear that we have no tolerance for hate in this country, and we have no tolerance for hate crimes in Colorado.

"I hope that today's sentence demonstrates to the victims and to the many others touched by this horrific crime that we will not tolerate hate-fueled violence against anyone."

Defense attorneys have said Aldrich (24) identifies as non-binary. Federal prosecutors used gender-neutral terms in filings, but state prosecutors have reportedly said there is "zero evidence" the attacker identified as non-binary before the horrific episode.