The deranged teacher who allegedly opened fire at the White House Correspondents’ Dinner with the intent to kill as many members of the Trump administration as possible posted countless anti-Trump screeds on his social media before the attack.

Cole Allen, a 31-year-old CalTech grad from California, posted and reposted on BlueSky ad nauseam — apparently preferring the alternative platform over X, as he branded its owner Elon Musk a “Hitlerian figure.”

The account had the handle “Coldforce” — the same moniker Allen signed in his manifesto obtained by The Post.

Allen frequently condemned the Trump administration across his 1,000+ posts, with his complaints seemingly heating up when the US support for Ukraine waned.

He wrote that Vice President JD Vance is “a piece of sh-t” for bragging about ditching Ukraine during a Turning Point USA event at the University of Georgia on April 14.

Allen boosted several fundraisers for Ukrainian brigades and students in need of supplies on his account.

In another post, he described President Trump as “a sociopathic mob boss” solely based on referenced in the Epstein files.

Then, on April 8, the day the US reached a temporary ceasefire agreement with Iran, Allen claimed the deal was a surrender where Trump jumped ship.

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Follow the latest on the shooting at the White House Correspondents’ Dinner:

• The security loopholes that allowed Cole Allen to get near White House Correspondents’ Dinner — as Trump says this proves need for his ballroom
• Inside WHCD shooter Cole Allen’s deadly arsenal of weapons — and the two California stores he bought them from
• Read WHCD gunman’s full anti-Trump manifesto
• WHCD shooting live updates: Suspect Cole Allen said he would have killed everybody at event to get to his Trump admin targets

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“Trump is literally one of those villains that if you beat his ass hard enough, he’ll join your team. Don’t really have any other insights to this, it’s not really actionable cause no way schumer just canes him into acting his age, but, like, it would probably literally work on him,” he wrote.

Allen also went off when Trump shared an AI-generated photo of himself dressed like Jesus Christ.

Allen, a self-proclaimed Protestant Christian, shared several reposts calling out the Trump administration’s Christian hypocrisy and suggesting many members should be categorized as “satanic idolators.”

“i’m not sure that you can work for this admin and be *any flavor of genuine christian believer* and see trump post something like this [Trump as Jesus] without understanding, at some level, deep down, that you are f–king damned, even if you’ll never admit it to anyone,” one repost read.

Allen echoed similar beliefs in his manifesto that he sent to his friends and family before Saturday’s foiled attack. While reflecting on how Christians are called to forgive others, he claimed that the Trump administration is past the point of redemption.

“Turning the other cheek is for when you yourself are oppressed. I’m not the person raped in a detention camp. I’m not the fisherman executed without trial. I’m not a schoolkid blown up or a child starved or a teenage girl abused by the many criminals in this administration. Turning the other cheek when *someone else* is oppressed is not Christian behavior; it is complicity in the oppressor’s crimes,” he wrote.

The last post Allen pinned before deleting his BlueSky account showed a gif from an anime of a person kneeling before two others and apologizing profusely.

His manifesto also began with a list of apologies “to everyone whose trust [he] abused.”

Allen is expected to be formally charged with using a firearm during a crime of violence and with assault of a federal officer during his court appearance Monday, according to US attorney for the District of Columbia Jeanine Pirro.