Documentary filmmaker Michael Moore blasted the Democratic National Committee – and floated that he thought the decision was racist – for changing the rules for 2020 candidates to get on the Democratic debate stage.

The DNC plans to do away with the donor threshold after the February New Hampshire debate, allowing candidates to participate if they are doing well enough in the polls or are earning convention delegates. This paves the way for former New York City Mayor Michael Bloomberg to get onstage.

‘The fact that the DNC will not allow Cory Booker on that stage, not let Julian Castro on the stage, but will let Mike Bloomberg on that stage,' Moore screamed to a crowd of thousands of Bernie Sanders supporters at a concert event in Clive, Iowa Friday night. 'Because he has a billion f***ing dollars.'

Michael Moore tore into the Democratic National Committee Friday night in Des Moines for a debate rule change that paves the way for billionaire candidate Michael Bloomberg to make the stage - after not budging for months when candidates of color were getting squeezed off

Documentary filmmaker and Bernie Sanders surrogate Michael Moore suggested that the DNC was racist because the party refused to change the debate rules in order to keep a more diverse field of candidates onstage

The news rules will open the door for former New York City Mayor Michael Bloomberg to participate in the debates because the number of donors a candidate has will not longer matter. Bloomberg has been self-funding his presidential campaign

Sen. Bernie Sanders was still stuck in Washington Friday night as his event with Michael Moore and Bon Iver kicked off. He later called into the Clive, Iowa venue and gave a part of his stump speech to supporters

The DNC refused to budge on donor and polling requirements for the 2019 debates, which eventually squeezed both Sen. Cory Booker (left) and former HUD Director Julian Castro (right) off the stage. Both candidates have since dropped out of the 2020 presidential race

The DNC has received criticism for the optics, though the top-polling candidates of the race: former Vice President Joe Biden, Sen. Bernie Sanders, Sen. Elizabeth Warren and former South Bend Mayor Pete Buttigieg are all white.

Without achieving early success, Booker, who is black, and Castro, who is Hispanic, dropped out.

Andrew Yang, who is Asian-American, missed the last debate, but is expected to be on the debate stage in New Hampshire next month.

Bloomberg got a late start, entering the field in late November.

To make up for it, he’s plowed hundreds of millions into advertising – and decided to skip the early contest states, instead keeping an eye on places that vote on Super Tuesday, March 3.

Unlike billionaire Tom Steyer, who asked supporters to chip in just $1 so he could participate in the debates – which he as – Bloomberg is self-funding his entire campaign, and thus would never have made the stage without the rule change.

Moore, one of a number of surrogates speaking on behalf of Sanders at a concert headlined by the band Bon Iver, went after both the DNC and Bloomberg.

‘We already have enough to fight with Donald Trump and these enabling Republicans,’ he griped, name-dropping a number of other perceived enemies to the Sanders movement including the banks and corporate America.

He called the rule change ‘this Hail Mary pass of theirs’ to stop Sanders’ momentum.

The Vermont senator has topped a number of Iowa polls and is 3.6 points ahead in the state, according to the Real Clear Politics polling average.

Rep. Ilhan Omar was one of Bernie Sanders' surrogates who spoke in his stead Friday night in Clive, Iowa, just outside of Des Moines. Sanders couldn't make it out of Washington in time for the event with Bon Iver

Rep. Ilhan Omar (left) brought her boyfriend Tim Mynett (second from left) along with her to Des Moines, Iowa. Both Omar and Mynett got divorces from their respective spouses in the past few months

Bon Iver was the headliner for the Bernie Sanders campaign event Friday night in Iowa, a concert the Vermont senator had to miss thanks to President Trump's impeachment trial

As for Bloomberg, Moore deployed the R-word, calling him ‘The Republican mayor of New York City.'

Sanders remains stuck in Washington due to the impeachment trial of President Trump.

Moore joked that he came to Iowa 'because Bernie told me he has jury duty.'

Sanders did please his supporters by calling in and delivering a bit of his stump speech to the crowd.

A number of surrogates also spoke at the event including Rep. Ilhan Omar, who was spotted at a Sanders campaign canvassing event with her now-divorced boyfriend earlier Friday. Also Reps. Rashida Tlaib and Pramila Jayapal.

Tlaib, who famously dropped the F-bomb the night she was sworn into Congress in regards to impeaching Trump, played troublemaker Friday night too.

When Hillary Clinton's comments about Sanders were brought up, moderator Dionna Langford told the audience they should be polite and not boo.

Tlaib encouraged them to do the opposite.