President Donald Trump is fuming mad after Twitter stopped giving his unhinged and untrue utterances a pass. On May 26, the platform called Trump out about his bogus claims about mail-in ballots.

Here’s the tweet that touched off his war on Twitter:

Twitter slapped the tweet with a “Get the Facts” label used to mark fake news and conspiracy theories.

What you need to know:

Trump falsely claimed that mail-in ballots would lead to “a Rigged Election.” However, fact-checkers say there is no evidence that mail-in ballots are linked to voter fraud.

Trump falsely claimed that California will send mail-in ballots to “anyone living in the state, no matter who they are or how they got there.” In fact, only registered voters will receive ballots.

Five states already vote entirely by mail and all states offer some form of mail-in absentee voting, according to NBC News.

He continued his threats against Twitter today:

Stay tuned! “Get the Facts” is going to be a big part of the US election cycle.

(Photos, YouTube; via CNN)