I wonder if Trump is afraid that if he lets this go on, the autonomous zone will predictably collapse, so the far left will de-legitimize itself and he won't have this convenient target to attack in the election.   Right now, the person who loves the "defund the police" movement the most is, or should be, Trump.  That "defund the police" movement is God's gift to Trump's re-election campaign.  I'm sure he doesn't want to see it go away.  So his best move is to go into Seattle with overwhelming force, take back that little part of Seattle, and inflame all those protesters even more.   Divide and conquer.  If you're going to run a campaign on law and order, riots are a big help.  

Politicians love external threats they can use to motivate their supporters.   Trump doesn't hate Antifa.  He loves Antifa.   But he knows that Antifa and whoever it is behind the Seattle autonomous zone are in the process of discrediting themselves, and he doesn't want that.  He wants the far left to stay as strong as possible right up through the election.  That's why he is flipping out about this autonomous zone, which is really a local issue, not a federal issue.

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