Pope Francis keeps coming at Donald Trump.

The left-wing Pope has established himself as one of the most vocal anti-Trump critics in the world.

He just took aim at Trump in a new letter that many considered the most outrageous attack on Trump yet.

Pope Francis is no fan of populism.

He’s repeatedly decried the populist movements that have arisen around the globe in reaction to the elites’ demands for open borders.

Just days before the South Carolina primary, Pope Francis smeared Trump as un-Christian because of his support for a border wall.

Now he’s once again attacking populism, and by extension, Donald Trump.

Pope Francis wrote a letter supporting social justice activists and warning against populism movements.

His letter checked the box of a collection of left-wing special interests – social justice warriors, environmentalists and refugees.

The Guardian reports:

Pope Francis has offered his unequivocal support to grassroots organizers and activists who are fighting for social justice, migrants, and environmentalism, saying he “reaffirms” their choice to fight against tyranny amid a “gutting of democracies.”

“As Christians and all people of good will, it is for us to live and act at this moment. It is a grave responsibility, since certain present realities, unless effectively dealt with, are capable of setting off processes of dehumanization which would then be hard to reverse,” the pontiff wrote in a letter that was read to organizers this week.

The remarks can be viewed as a clear endorsement by the Argentinian pope of resistance against populist and xenophobic political movements. While he did not name Donald Trump, and stressed his remarks were not targeted at any individual politician, the letter, read at the opening of the U.S. Regional World Meeting of Popular Movements in Modesto, California, seem to speak directly to protests against the Republican president.

 “The direction taken beyond this historic turning point – the ways in which this worsening crisis gets resolved – will depend on people’s involvement and participation and, largely, on yourselves, the popular movements,” Francis wrote.

Pope Francis’ attack comes on the heels of reports that conservatives in the Vatican found an ideological ally in Trump Chief Strategist Steve Bannon.

Will the Pope back off his attack dog pose against Trump?

Not likely.

Critics see Pope Francis as a left-wing ideologue.

Many of his statements and actions have contradicted traditional church doctrine.

And he’s even weighed in on global warming and other hot-button leftist issues.

This led Rush Limbaugh to declare the Pope a Marxist.

Since Trump’s election, the Pope has stepped up his rhetoric.

Pope Francis made one statement that appeared to compare Trump to Hitler.

And now he’s blasting the populist movement that carried Trump to the White House and is upending the globalist order in Europe.